| Name | Gender | Categories | |
|---|
| Martina Jäschke | f | Olympic Medalists |  |
| Jashar | m | Biblical Characters | |
| Jashen | m | Biblical Characters | |
| Jashobeam | m | Biblical Characters | |
| Jashobeam | m | Biblical Characters | |
| Jashub | m | Biblical Characters | |
| Jashub | m | Biblical Characters | |
| Jashubi-Lehem | m | Biblical Characters | |
| Šarūnas Jasikevičius | m | Olympic Medalists | |
| Jason | m | Characters in Greek Mythology | |
| Jason of Tarsus | m | Biblical Characters, Saints | |
| David Jason | m | Notable Actors and Entertainers | |
| Chris Jasper | m | Rock and Roll Hall-of-Famers | |
| Chet Jastremski | m | Olympic Medalists | |
| Jathniel | m | Biblical Characters | |
| Đurđina Jauković | f | Notable Athletes | |
| Inese Jaunzeme | f | Olympic Medalists | |
| Nesrin Javadzadeh | f | Notable Actors and Entertainers | |
| Javan | m | Biblical Characters | |
| Inspector Javert | m | Fictional Characters from Books, Fictional Characters from Plays and Musicals | |
| "Jam Master" Jay | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Jay-Z | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Jayaatu Khan | m | Chinese Emperors, Other Royalty | |
| Jayne | f | Fictional Characters from Song Titles | |
| Jaziz | m | Biblical Characters | |
| Michel Jazy | m | Olympic Medalists | |
| Jean | f | Fictional Characters from Song Titles | |
| Jean | m | Notable Athletes | |
| Jean | f | Fictional Characters from Song Titles | |
| Jean I | m | Frankish and French Kings | |
| Jean II the Good | m | Frankish and French Kings | |
| Jean Le Rond d'Alembert | m | Notable Philosophers and Thinkers | |
| Wyclef Jean | m | Notable Musicians | |
| Jeanne | f | Hurricanes and Tropical Storms | |
| Jeanne of Arc | f | Notable Military Figures, Saints, Shakespearian Characters | |
| Buddy Jeannette | m | Hall-of-Famers, Notable Athletes | |
| Jeannie | f | Fictional Characters from Television | |
| Constance Jeans | f | Olympic Medalists | |
| Jeaterai | m | Biblical Characters | |
| Jeberechiah | m | Biblical Characters | |
| Jed | m | Fictional Characters from Song Titles | |
| Jedidah | f | Biblical Characters | |
| Otylia Jędrzejczak | f | Olympic Medalists | |
| Janusz Jędrzejewicz | m | Polish Presidents and Prime Ministers | |
| Jeduthun | m | Biblical Characters | |
| Jeeves | m | Fictional Characters from Books, Fictional Characters from Television | |
| Jeezer | m | Biblical Characters | |
| Jefferson | m | Notable Athletes | |
| George Jefferson | m | Olympic Medalists | |
| Martha Jefferson Randolph | f | American First Ladies | |
| Thomas Jefferson | m | Olympic Medalists | |
| Thomas Jefferson | m | American Presidents | |
| Will Jeffries | m | Fictional Characters from Television | |
| Jehallelel | m | Biblical Characters | |
| Jehallelel | m | Biblical Characters | |
| Jehath | m | Biblical Characters | |
| Jehdeiah | m | Biblical Characters | |
| Jehdeiah | m | Biblical Characters | |
| Jehezkel | m | Biblical Characters | |
| Jehiah | m | Biblical Characters | |
| Jehieli | m | Biblical Characters | |
| Jehizkiah | m | Biblical Characters | |
| Jehoaddah | m | Biblical Characters | |
| Jehoaddin | f | Biblical Characters | |
| Jehoahaz | m | Biblical Characters, Israelite and Judean Kings | |
| Jehoahaz | m | Biblical Characters, Israelite and Judean Kings | |
| Jehoash | m | Biblical Characters, Israelite and Judean Kings | |
| Jehoash | m | Biblical Characters, Israelite and Judean Kings | |
| Jehoiachin | m | Biblical Characters, Israelite and Judean Kings | |
| Jehoiakim | m | Biblical Characters, Israelite and Judean Kings | |
| Jehoiarib | m | Biblical Characters | |
| Jehoiarib | m | Biblical Characters | |
| Jehonathan | m | Biblical Characters | |
| Jehonathan | m | Biblical Characters | |
| Jehoram | m | Biblical Characters | |
| Jehoram | m | Biblical Characters, Israelite and Judean Kings | |
| Jehoram | m | Biblical Characters, Israelite and Judean Kings | |
| Jehoshaphat | m | Biblical Characters | |
| Jehoshaphat | m | Biblical Characters, Israelite and Judean Kings | |
| Jehoshaphat | m | Biblical Characters | |
| Jehoshaphat | m | Biblical Characters | |
| Jehosheba | f | Biblical Characters | |
| Jehozadak | m | Biblical Characters | |
| Jehu | m | Biblical Characters | |
| Jehu | m | Biblical Characters | |
| Jehu | m | Biblical Characters | |
| Jehu | m | Biblical Characters | |
| Jehu | m | Biblical Characters, Israelite and Judean Kings | |
| Jehubbah | m | Biblical Characters | |
| Jehucal | m | Biblical Characters | |
| Jehudi | m | Biblical Characters | |
| Jekameam | m | Biblical Characters | |
| Jekamiah | m | Biblical Characters | |
| Jekamiah | m | Biblical Characters | |
| Jekuthiel | m | Biblical Characters | |
| Vladimir Jelčić | m | Notable Athletes, Olympic Medalists | |
| Elfriede Jelinek | f | Nobel Prize Winners, Notable Writers | |
| Jemimah | f | Biblical Characters | |
| Jemuel | m | Biblical Characters | |
| Megan Jendrick | f | Olympic Medalists | |
| László Jeney | m | Olympic Medalists | |
| Charles Jenkins Jr. | m | Olympic Medalists | |
| Charlie Jenkins | m | Olympic Medalists | |
| David Jenkins | m | Olympic Medalists | |
| Gethin Jenkins | m | Notable Athletes | |
| Robert Jenkinson | m | British Prime Ministers | |
| Caitlyn Jenner | f | Notable Actors and Entertainers, Notable Athletes, Olympic Medalists | |
| Kendall Jenner | f | Notable Actors and Entertainers | |
| Kris Jenner | f | Notable Actors and Entertainers | |
| Kylie Jenner | f | Notable Actors and Entertainers | |
| Jennie Lee | f | Fictional Characters from Song Titles | |
| Jennifer | f | Fictional Characters from Books | |
| Alex Jennings | m | Notable Actors and Entertainers | |
| Hughie Jennings | m | Hall-of-Famers | |
| Ken Jennings | m | Notable Actors and Entertainers | |
| Lynn Jennings | f | Olympic Medalists | |
| Mark Jennings | m | Fictional Characters from Television | |
| Pat Jennings | m | Notable Athletes | |
| Peter Jennings | m | Notable Journalists | |
| Will Jennings | m | Notable Musicians | |
| Jenny | f | Fictional Characters from Song Titles | |
| Jenny | f | Fictional Characters from Song Titles | |
| Jenny | f | Fictional Characters from Song Titles | |
| Jenny | f | Fictional Characters from Song Titles | |
| Jenny | f | Fictional Characters from Song Titles | |
| Jenny Wren | f | Fictional Characters from Song Titles | |
| Ashley Jensen | f | Notable Actors and Entertainers | |
| Clay Jensen | m | Fictional Characters from Books, Fictional Characters from Television | |
| Jackie Jensen | m | Most Valuable Players | |
| J. Hans D. Jensen | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Johannes V. Jensen | m | Nobel Prize Winners, Notable Writers | |
| Ken Jeong | m | Notable Actors and Entertainers | |
| Jeong Keun-woo | m | Olympic Medalists | |
| Jeong Myung-hee | f | Olympic Medalists | |
| Jephthah | m | Biblical Characters | |
| Jephunneh | m | Biblical Characters | |
| Jephunneh | m | Biblical Characters | |
| Janeth Jepkosgei Busienei | f | Olympic Medalists | |
| Selwyn Jepson | m | Notable Writers | |
| Jerah | m | Biblical Characters | |
| Jered | m | Biblical Characters | |
| Jeremai | m | Biblical Characters | |
| Jeremiah | m | Biblical Characters | |
| Jeremoth | m | Biblical Characters | |
| Jeremoth | m | Biblical Characters | |
| Jeremoth | m | Biblical Characters | |
| Jeremoth | m | Biblical Characters | |
| Jeremoth | m | Biblical Characters | |
| Jeremy | m | Fictional Characters from Song Titles | |
| Jeriah | m | Biblical Characters | |
| Jeribai | m | Biblical Characters | |
| Jeriel | m | Biblical Characters | |
| Jerioth | f | Biblical Characters | |
| Květa Jeriová | f | Olympic Medalists | |
| Niels Kaj Jerne | m | Nobel Prize Winners | |
| Jeroboam | m | Biblical Characters, Israelite and Judean Kings | |
| Jeroboam | m | Biblical Characters, Israelite and Judean Kings | |
| Jeroentje | m | Fictional Characters from Books | |
| Harry Jerome | m | Olympic Medalists | |
| Jerry | m | Hurricanes and Tropical Storms | |
| Jerry | m | Fictional Characters from Song Titles | |
| Jerusha | f | Biblical Characters | |
| Gunnar Jervill | m | Olympic Medalists | |
| Jeshebeab | m | Biblical Characters | |
| Jesher | m | Biblical Characters | |
| Jeshishai | m | Biblical Characters | |
| Jeshohaiah | m | Biblical Characters | |
| Jesimel | m | Biblical Characters | |
| Celina Jesionowska | f | Olympic Medalists | |
| Jesse | m | Biblical Characters | |
| Jesse of Tsilkani | m | Saints | |
| Jessica | f | Fictional Characters from Song Titles | |
| Jessica | f | Fictional Characters from Song Titles | |
| Jessica | f | Shakespearian Characters | |
| Jessie | f | Fictional Characters from Song Titles | |
| Jessie | f | Fictional Characters from Song Titles | |
| Jessie | m | Fictional Characters from Song Titles | |
| Jesus Christ | m | Biblical Characters, Notable Philosophers and Thinkers | |
| Jesus Justus | m | Biblical Characters | |
| Carmelita Jeter | f | Olympic Medalists | |
| Jetheth | m | Biblical Characters | |
| Jethro | m | Biblical Characters | |
| Joan Jett | f | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Jetur | m | Biblical Characters | |
| Jeuz | m | Biblical Characters | |
| Jezebel | f | Biblical Characters | |
| Jezer | m | Biblical Characters | |
| Jeziel | m | Biblical Characters | |
| Jezoar | m | Biblical Characters | |
| Jezrahiah | m | Biblical Characters | |
| Jezrahiah | m | Biblical Characters | |
| Jezreel | m | Biblical Characters | |
| Jibsam | m | Biblical Characters | |
| Jidlaph | m | Biblical Characters | |
| Pamela Jiles | f | Olympic Medalists | |
| Jim | m | Fictional Characters from Song Titles | |
| Jim | m | Fictional Characters from Books | |
| Jim | m | Fictional Characters from Song Titles | |
| Andrés Jiménez | m | Olympic Medalists | |
| Juan Ramón Jiménez | m | Nobel Prize Winners, Notable Writers | |
| Jimmu | m | Japanese Emperors, Other Mythological Characters | |
| Jimmy | m | Fictional Characters from Song Titles | |
| Jimmy Mack | m | Fictional Characters from Song Titles | |
| Jin Kab-yong | m | Olympic Medalists | |
| Jin Pil-jung | m | Olympic Medalists | |
| Jin Yong | m | Notable Writers | |
| Jindřich of Carinthia | m | Bohemian Kings | |
| Eva Jinek | f | Notable Actors and Entertainers | |
| Jingu | f | Japanese Emperors | |
| Ben Jipcho | m | Olympic Medalists | |
| Jiří | m | Bohemian Kings | |
| Jô | m | Notable Athletes | |
| Joachim | m | Saints | |
| Joachim of Denmark | m | Other Royalty | |
| Tom Joad | m | Fictional Characters from Books | |
| Joahaz | m | Biblical Characters | |
| Joan | f | Hurricanes and Tropical Storms | |
| Joan | f | Fictional Characters from Song Titles | |
| Joanna | f | Fictional Characters from Song Titles | |
| Joanna | f | Biblical Characters | |
| João Gilberto | m | Grammy Award Winners, Notable Musicians | |
| João I the Good | m | Portuguese Kings and Queens | |
| Joash | m | Biblical Characters | |
| Joash | m | Biblical Characters | |
| Joash | m | Biblical Characters | |
| Joash | m | Biblical Characters | |
| Joash | m | Biblical Characters | |
| Joash | m | Biblical Characters | |
| Job | m | Biblical Characters | |
| Brian Job | m | Olympic Medalists | |
| Steve Jobs | m | Notable Businesspeople | |
| Jocasta | f | Characters in Greek Mythology | |
| Jocastus | m | Characters in Greek Mythology | |
| Jochebed | f | Biblical Characters | |
| Jock | m | Fictional Characters from Song Titles | |
| Joda | m | Biblical Characters | |
| Cotton-Eyed Joe | m | Fictional Characters from Song Titles | |
| Joe | m | Fictional Characters from Song Titles | |
| Joe | m | Fictional Characters from Song Titles | |
| Joe | m | Fictional Characters from Song Titles | |
| Joe | m | Fictional Characters from Song Titles | |
| Joe | m | Fictional Characters from Song Titles | |
| Joed | m | Biblical Characters | |
| Joel | m | Biblical Characters | |
| Joel | m | Fictional Characters from Song Titles | |
| Billy Joel | m | Grammy Award Winners, Notable Musicians, Rock and Roll Hall-of-Famers | |
| Joelah | m | Biblical Characters | |
| Joey | m | Fictional Characters from Song Titles | |
| Joey | m | Fictional Characters from Song Titles | |
| Joezer | m | Biblical Characters | |
| Jogli | m | Biblical Characters | |
| Joha | m | Biblical Characters | |
| Joha | m | Biblical Characters | |
| Hans | m | Danish Kings and Queens, Norwegian Kings and Queens, Swedish Kings and Queens | |
| Johan III | m | Swedish Kings and Queens | |
| Johann Strauss I | m | Notable Musicians | |
| Johanna | f | Fictional Characters from Song Titles | |
| Jóhanna Sigurðardóttir | f | Icelandic Presidents and Prime Ministers | |
| John I Tzimisces | m | Roman and Byzantine Emperors | |
| John II Comnenus | m | Roman and Byzantine Emperors | |
| John VI Cantacuzenus | m | Roman and Byzantine Emperors | |
| John VII Palaeologus | m | Roman and Byzantine Emperors | |
| Gerald Johanssen | m | Fictional Characters from Television | |
| Greta Johansson | f | Olympic Medalists | |
| Hjalmar Johansson | m | Olympic Medalists | |
| Ingemar Johansson | m | Olympic Medalists | |
| Nils Johansson | m | Olympic Medalists | |
| Paavo Johansson | m | Olympic Medalists | |
| Per Johansson | m | Olympic Medalists | |
| Rune Johansson | m | Notable Athletes | |
| "Scatman" John | m | Notable Musicians | |
| Don John | m | Shakespearian Characters | |
| Dr. John | m | Rock and Roll Hall-of-Famers | |
| Friar John | m | Shakespearian Characters | |
| John | m | Bishops of Rome and the Popes | |
| John | m | Bishops of Rome and the Popes | |
| John | m | Fictional Characters from Song Titles | |
| John | m | Fictional Characters from Song Titles | |
| John | m | Fictional Characters from Song Titles | |
| John | m | Fictional Characters from Song Titles | |
| John | m | Fictional Characters from Song Titles | |
| John | m | Fictional Characters from Song Titles | |
| John | m | Biblical Characters | |
| John | m | Fictional Characters from Books | |
| John | m | Fictional Characters from Song Titles | |
| John | m | Fictional Characters from Song Titles | |
| John | m | English and British Kings and Queens, Shakespearian Characters | |
| John | m | Fictional Characters from Song Titles | |
| John | m | Fictional Characters from Song Titles | |
| John | m | Fictional Characters from Song Titles | |
| John Calybites | m | Saints | |
| John Duns Scotus | m | Notable Philosophers and Thinkers | |
| John Henry | m | Fictional Characters from Television | |
| John Hoan Trinh Doan | m | Saints | |
| John I | m | Bishops of Rome and the Popes, Saints | |
| John II | m | Bishops of Rome and the Popes | |
| John III | m | Bishops of Rome and the Popes | |
| John IV | m | Bishops of Rome and the Popes | |
| John IX | m | Bishops of Rome and the Popes | |
| John Mark | m | Biblical Characters | |
| John of Beverley | m | Saints | |
| John of Bridlington | m | Saints | |
| John of Gaunt | m | Notable Politicians and Statespeople, Other Royalty, Shakespearian Characters | |
| John of Lancaster, Duke of Bedford | m | Other Royalty, Shakespearian Characters | |
| John of Zedazeni | m | Saints | |
| John Paul I | m | Bishops of Rome and the Popes | |
| John Paul II | m | Bishops of Rome and the Popes, Saints | |
| John Russell | m | British Prime Ministers | |
| John the Apostle | m | Biblical Characters, Saints | |
| John the Baptist | m | Biblical Characters, Saints | |
| John the Bastard of Orleans | m | Shakespearian Characters | |
| John the Hermit | m | Saints | |
| John the Savage | m | Fictional Characters from Books | |
| John V | m | Bishops of Rome and the Popes | |
| John VI | m | Bishops of Rome and the Popes | |
| John VII | m | Bishops of Rome and the Popes | |
| John VIII | m | Bishops of Rome and the Popes | |
| John X | m | Bishops of Rome and the Popes | |
| John XI | m | Bishops of Rome and the Popes | |
| John XII | m | Bishops of Rome and the Popes | |
| John XIII | m | Bishops of Rome and the Popes | |
| John XIV | m | Bishops of Rome and the Popes | |
| John XIX | m | Bishops of Rome and the Popes | |
| John XV | m | Bishops of Rome and the Popes | |
| John XVII | m | Bishops of Rome and the Popes | |
| John XVIII | m | Bishops of Rome and the Popes | |
| John XXI | m | Bishops of Rome and the Popes | |
| John XXII | m | Bishops of Rome and the Popes | |
| John XXIII | m | Bishops of Rome and the Popes, Saints | |
| Little John | m | Fictional Characters from Traditional Tales | |
| Elton John | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Louise Jöhncke | f | Olympic Medalists | |
| Johnny | m | Fictional Characters from Song Titles | |
| Johnny | m | Fictional Characters from Song Titles | |
| Johnny | m | Fictional Characters from Song Titles | |
| Johnny | m | Fictional Characters from Song Titles | |
| Johnny | m | Fictional Characters from Song Titles | |
| Johnny | m | Fictional Characters from Song Titles | |
| Johnny | m | Fictional Characters from Song Titles | |
| Johnny | m | Fictional Characters from Song Titles | |
| Johnny | m | Fictional Characters from Song Titles | |
| Johnny | m | Fictional Characters from Song Titles | |
| Johnny | m | Fictional Characters from Song Titles | |
| Johnny | m | Fictional Characters from Song Titles | |
| Johnny | m | Fictional Characters from Song Titles | |
| Johnny | m | Fictional Characters from Song Titles | |
| Johnny Number 5 | m | Fictional Characters from Movies | |
| Glynis Johns | f | Notable Actors and Entertainers | |
| Helen Johns | f | Olympic Medalists | |
| Jasper Johns | m | Notable Artists | |
| Andrew Johnson | m | American Presidents | |
| Angelina Johnson | f | Harry Potter Characters | |
| Arte Johnson | m | Notable Actors and Entertainers | |
| Ben Johnson | m | Olympic Medalists | |
| Ben Johnson | m | Notable Actors and Entertainers, Oscar Award Winners | |
| Boris Johnson | m | British Prime Ministers | |
| Brian Johnson | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Butch Johnson | m | Olympic Medalists | |
| Calvin Johnson | m | Hall-of-Famers | |
| Carl Johnson | m | Olympic Medalists | |
| Chris Johnson | m | Notable Athletes | |
| Claudia "Lady Bird" Johnson | f | American First Ladies | |
| Cornelius Johnson | m | Olympic Medalists | |
| Courtney Johnson | f | Olympic Medalists | |
| Dave Johnson | m | Olympic Medalists | |
| Denis Johnson | m | Notable Writers | |
| Derek Johnson | m | Olympic Medalists | |
| Don Johnson | m | Notable Actors and Entertainers | |
| Dre Johnson | m | Fictional Characters from Television | |
| Dwayne Johnson | m | Notable Actors and Entertainers, Notable Athletes | |
| Earl Johnson | m | Olympic Medalists | |
| Earvin "Magic" Johnson | m | Hall-of-Famers, Most Valuable Players, Notable Athletes, Olympic Medalists | |
| Eliza Johnson | f | American First Ladies | |
| E. Pauline Johnson | f | Notable Writers | |
| Emma Johnson | f | Olympic Medalists | |
| Ernie "Moose" Johnson | m | Hall-of-Famers | |
| Eyvind Johnson | m | Nobel Prize Winners, Notable Writers | |
| Francis Johnson | m | Olympic Medalists | |
| Glen Johnson | m | Notable Athletes | |
| Gus Johnson | m | Hall-of-Famers, Notable Athletes | |
| Ivan "Ching" Johnson | m | Hall-of-Famers | |
| Jack Johnson | m | Notable Athletes | |
| Jack Johnson | m | Fictional Characters from Television | |
| Janie Johnson | f | Fictional Characters from Books | |
| Jenna Johnson | f | Olympic Medalists | |
| Jimmy Johnson | m | Hall-of-Famers | |
| Jimmy Johnson | m | Hall-of-Famers | |
| Joey Johnson | m | Fictional Characters from Television | |
| John Henry Johnson | m | Hall-of-Famers | |
| Johnny Johnson | m | Fictional Characters from Plays and Musicals | |
| Josephine Johnson | f | Pulitzer Award Winners | |
| Judy Johnson | m | Hall-of-Famers | |
| Kathy Johnson | f | Olympic Medalists | |
| Lawrence Johnson | m | Olympic Medalists | |
| Lyndon B. Johnson | m | American Presidents | |
| Maxine Johnson | f | Fictional Characters from Television | |
| Michael Johnson | m | Notable Athletes, Olympic Medalists | |
| Phyllis Johnson | f | Olympic Medalists | |
| Rafer Johnson | m | Olympic Medalists | |
| Randy Johnson | m | Hall-of-Famers, Notable Athletes | |
| Robert Johnson | m | Notable Musicians | |
| Ruby Johnson | f | Fictional Characters from Television | |
| Shannon Johnson | f | Olympic Medalists | |
| Stephanie Johnson | f | Fictional Characters from Television | |
| Steve "Patch" Johnson | m | Fictional Characters from Television | |
| Tom Johnson | m | Hall-of-Famers, Notable Athletes | |
| Viv Johnson | f | Fictional Characters from Television | |
| Walter Johnson | m | Hall-of-Famers, Most Valuable Players, Notable Athletes | |
| William "Skinny" Johnson | m | Hall-of-Famers | |
| Zoey Johnson | f | Fictional Characters from Television | |
| Abigail Johnston | f | Olympic Medalists | |
| Jennifer Johnston | f | Notable Writers | |
| Neil Johnston | m | Hall-of-Famers, Notable Athletes | |
| Sue Johnston | f | Notable Actors and Entertainers | |
| Banner Johnstone | m | Olympic Medalists | |
| Joiada | m | Biblical Characters | |
| Joiada | m | Biblical Characters | |
| Joiakim | m | Biblical Characters | |
| Charlie Joiner | m | Hall-of-Famers | |
| Kenji Jojima | m | Olympic Medalists | |
| Jojo | m | Fictional Characters from Song Titles | |
| Nikola Jokić | m | Most Valuable Players, Notable Athletes, Olympic Medalists | |
| Jokim | m | Biblical Characters | |
| Jokshan | m | Biblical Characters | |
| Joktan | m | Biblical Characters | |
| Jolene | f | Fictional Characters from Song Titles | |
| Aurèle Joliat | m | Hall-of-Famers, Most Valuable Players, Notable Athletes | |
| Angelina Jolie | f | Notable Actors and Entertainers, Oscar Award Winners | |
| Gerard Joling | m | Notable Actors and Entertainers, Notable Musicians | |
| Frédéric Joliot-Curie | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Irène Joliot-Curie | f | Nobel Prize Winners, Notable Scientists and Inventors | |
| Jommeke | m | Fictional Characters from Books | |
| Jón Magnússon | m | Icelandic Presidents and Prime Ministers | |
| Jón Þorláksson | m | Icelandic Presidents and Prime Ministers | |
| Jonadab | m | Biblical Characters | |
| Jonadab | m | Biblical Characters | |
| Jonah | m | Biblical Characters | |
| Jonam | m | Biblical Characters | |
| Daniel Jonas | m | Fictional Characters from Television | |
| Joe Jonas | m | Notable Actors and Entertainers, Notable Musicians | |
| Kevin Jonas | m | Notable Actors and Entertainers, Notable Musicians | |
| Nick Jonas | m | Notable Actors and Entertainers, Notable Musicians | |
| Jonathan | m | Biblical Characters | |
| Jonathan | m | Biblical Characters | |
| Jonathan | m | Biblical Characters | |
| Jonathas | m | Fictional Characters from Books | |
| Alan Jones | m | Notable Athletes | |
| Barbara Jones | f | Olympic Medalists | |
| Bert Jones | m | Most Valuable Players | |
| Bobby Jones | m | Notable Athletes | |
| Bobby Jones | m | Hall-of-Famers, Notable Athletes, Olympic Medalists | |
| Brenda Jones | f | Olympic Medalists | |
| Brian Jones | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Bridget Jones | f | Fictional Characters from Books | |
| Calliope Jones | f | Fictional Characters from Television | |
| Cappie Jones | m | Fictional Characters from Television | |
| Carmen Jones | f | Fictional Characters from Plays and Musicals | |
| Carolyn Jones-Young | f | Olympic Medalists | |
| Casey Jones | m | Fictional Characters from Song Titles | |
| Chipper Jones | m | Hall-of-Famers, Most Valuable Players, Notable Athletes | |
| Christopher Jones | m | Olympic Medalists | |
| Coraline Jones | f | Fictional Characters from Books | |
| David "Deacon" Jones | m | Hall-of-Famers | |
| David Jones | m | Olympic Medalists | |
| Diana Wynne Jones | f | Notable Writers | |
| Dwight Jones | m | Olympic Medalists | |
| Earl Jones | m | Olympic Medalists | |
| Esther Jones | f | Olympic Medalists | |
| George Jones | m | Notable Musicians | |
| Griffith Jones | m | Notable Actors and Entertainers | |
| Hayes Jones | m | Olympic Medalists | |
| Indiana Jones | m | Fictional Characters from Movies | |
| Isham Jones | m | Notable Musicians | |
| James Earl Jones | m | Emmy Award Winners, Notable Actors and Entertainers, Tony Award Winners | |
| Jemima Jones | f | Fictional Characters from Books | |
| Jennifer Jones | f | Notable Actors and Entertainers, Oscar Award Winners | |
| Jerry Jones | m | Hall-of-Famers | |
| John Paul Jones | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Johnny Jones | m | Fictional Characters from Plays and Musicals | |
| K. C. Jones | m | Hall-of-Famers, Notable Athletes, Olympic Medalists | |
| Ken Jones | m | Olympic Medalists | |
| Kenney Jones | m | Rock and Roll Hall-of-Famers | |
| Lam Jones | m | Olympic Medalists | |
| Lou Jones | m | Olympic Medalists | |
| Mark Lewis Jones | m | Notable Actors and Entertainers | |
| Matt Jones | m | Notable Actors and Entertainers | |
| Mick Jones | m | Rock and Roll Hall-of-Famers | |
| Norah Jones | f | Grammy Award Winners, Notable Musicians | |
| Patricia Jones | f | Olympic Medalists | |
| Phil Jones | m | Notable Athletes | |
| Quincy Jones | m | Grammy Award Winners, Notable Musicians | |
| Sam Jones | m | Hall-of-Famers, Notable Athletes | |
| Samantha Jones | f | Fictional Characters from Television | |
| Samuel J. Jones | m | Notable Actors and Entertainers | |
| Samuel Jones | m | Olympic Medalists | |
| Shirley Jones | f | Notable Actors and Entertainers, Oscar Award Winners | |
| Stan Jones | m | Hall-of-Famers | |
| Stephen Graham Jones | m | Notable Writers | |
| Steve Jones | m | Rock and Roll Hall-of-Famers | |
| Terry Jones | m | Notable Actors and Entertainers, Notable Filmmakers | |
| Tom Jones | m | Grammy Award Winners, Notable Musicians | |
| Tom Jones | m | Fictional Characters from Books | |
| Tommy Lee Jones | m | Notable Actors and Entertainers, Oscar Award Winners | |
| Vinnie Jones | m | Notable Actors and Entertainers, Notable Athletes | |
| Walter Jones | m | Hall-of-Famers | |
| Jong Yeu-jeng | m | Olympic Medalists | |
| Jan Jongbloed | m | Notable Athletes | |
| Wim Jonk | m | Notable Athletes | |
| Ben Jonson | m | Notable Writers | |
| Henry Jonsson | m | Olympic Medalists | |
| Joo Hyun-jung | f | Olympic Medalists | |
| Janis Joplin | f | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Scott Joplin | m | Notable Musicians | |
| Trudy Joplin | f | Fictional Characters from Television | |
| Jorah | m | Biblical Characters | |
| Jorai | m | Biblical Characters | |
| Joram | m | Biblical Characters | |
| Joram | m | Biblical Characters | |
| Avtandil Jorbenadze | m | Georgian Presidents and Prime Ministers | |
| Jordan of Saxony | m | Saints | |
| Henry Jordan | m | Hall-of-Famers | |
| Lee Jordan | m | Harry Potter Characters | |
| Lucy Jordan | f | Fictional Characters from Song Titles | |
| Michael Jordan | m | Hall-of-Famers, Most Valuable Players, Notable Athletes, Olympic Medalists | |
| Anker Jørgensen | m | Danish Prime Ministers | |
| Dan Jorgensen | m | Olympic Medalists | |
| Janel Jorgensen | f | Olympic Medalists | |
| Jorim | m | Biblical Characters | |
| Jorkoam | m | Biblical Characters | |
| Teresa of Jesus Jornet e Ibars | f | Saints | |
| Annemarie Jorritsma | f | Notable Politicians and Statespeople | |
| Jose | m | Hurricanes and Tropical Storms | |
| Jose | m | Hurricanes and Tropical Storms | |
| Marciano Jose | m | Saints | |
| Josech | m | Biblical Characters | |
| Josef Emanuel of Liechtenstein | m | Other Royalty | |
| Josef K. | m | Fictional Characters from Books | |
| Joseph | m | Biblical Characters | |
| Joseph | m | Biblical Characters, Saints | |
| Joseph | m | Shakespearian Characters | |
| Joseph Canh Luong Hoang | m | Saints | |
| Joseph Hien Quang Do | m | Saints | |
| Joseph I | m | Austrian Dukes and Emperors, Bohemian Kings, German Kings and Holy Roman Emperors, Hungarian Kings and Queens | |
| Joseph Khang Duy Nguyen | m | Saints | |
| Joseph of Alaverdi | m | Saints | |
| Joseph of Arimathea | m | Biblical Characters, Saints | |
| Joseph Thi Dang Le | m | Saints | |
| Joseph Vien Dinh Dang | m | Saints | |
| Joséphine of Belgium | f | Other Royalty | |
| Josephine of Denmark | f | Other Royalty | |
| Brian David Josephson | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Josephus | m | Notable Philosophers and Thinkers | |
| Joshah | m | Biblical Characters | |
| Joshaphat | m | Biblical Characters | |
| Joshaphat | m | Biblical Characters | |
| Joshaviah | m | Biblical Characters | |
| Joshbekashah | m | Biblical Characters | |
| Joshibiah | m | Biblical Characters | |
| Joshua | m | Biblical Characters | |
| Anthony Joshua | m | Notable Athletes, Olympic Medalists | |
| Josiah | m | Biblical Characters, Israelite and Judean Kings | |
| Josiah | m | Biblical Characters | |
| Josie | f | Fictional Characters from Song Titles | |
| Josiphiah | m | Biblical Characters | |
| Addie Joss | m | Hall-of-Famers, Notable Athletes | |
| Jotham | m | Biblical Characters | |
| Jotham | m | Biblical Characters, Israelite and Judean Kings | |
| Jotham | m | Biblical Characters | |
| Léon Jouhaux | m | Nobel Prize Winners | |
| Margery Jourdayne | f | Shakespearian Characters | |
| Sergėjus Jovaiša | m | Olympic Medalists | |
| Jovan Nenad | m | Serbian Kings, Tsars and Princes | |
| Joaquín Jovellar Soler | m | Spanish Prime Ministers | |
| Božidar Jović | m | Notable Athletes, Olympic Medalists | |
| Greg Joy | m | Olympic Medalists | |
| Samara Joy | f | Grammy Award Winners | |
| Joyce | f | Hurricanes and Tropical Storms | |
| Joyce | f | Hurricanes and Tropical Storms | |
| Kevin Joyce | m | Olympic Medalists | |
| Al Joyner | m | Olympic Medalists | |
| Jackie Joyner-Kersee | f | Notable Athletes, Olympic Medalists | |
| Joseph II | m | Austrian Dukes and Emperors, Bohemian Kings, German Kings and Holy Roman Emperors, Hungarian Kings and Queens | |
| Jarosława Jóźwiakowska | f | Olympic Medalists | |
| Don Juan | m | Fictional Characters from Books, Fictional Characters from Plays and Musicals, Fictional Characters from Traditional Tales | |
| Juan | m | Hurricanes and Tropical Storms | |
| Juan Carlos I | m | Spanish Kings and Queens | |
| Juan de Ribera | m | Saints | |
| Juan I | m | Spanish Kings and Queens | |
| Juan I | m | Spanish Kings and Queens | |
| Juan II | m | Spanish Kings and Queens | |
| Juan II | m | Spanish Kings and Queens | |
| Juana the Mad | f | Spanish Kings and Queens | |
| Juanes | m | Notable Musicians | |
| Jubal | m | Biblical Characters | |
| Judah | m | Biblical Characters | |
| Judas | m | Biblical Characters | |
| Judas | m | Biblical Characters | |
| Judas Barsabas | m | Biblical Characters | |
| Judas Iscariot | m | Biblical Characters | |
| Judas Thaddaeus | m | Biblical Characters, Saints | |
| Jude | ? | Fictional Characters from Song Titles | |
| Jude | m | Biblical Characters | |
| Judith | f | Fictional Characters from Song Titles | |
| Judy | f | Fictional Characters from Song Titles | |
| Judy | f | Fictional Characters from Song Titles | |
| Judy | f | Fictional Characters from Song Titles | |
| Judy | f | Fictional Characters from Song Titles | |
| Judy | f | Fictional Characters from Song Titles | |
| Dagny Juel-Przybyszewska | f | Other Notables | |
| Jeanne Jugan | f | Saints | |
| Augustus D. Juilliard | m | Notable Businesspeople | |
| Mirna Jukić | f | Olympic Medalists | |
| Julia | f | Hurricanes and Tropical Storms | |
| Julia | f | Fictional Characters from Song Titles | |
| Julia | f | Shakespearian Characters | |
| Julia of Merida | f | Saints | |
| Raul Julia | m | Notable Actors and Entertainers | |
| Caroline Julian | f | Fictional Characters from Television | |
| Juliana of Mount Cornillon | f | Saints | |
| Juliana of the Netherlands | f | Other Royalty | |
| Julie | f | Fictional Characters from Books | |
| Julie | f | Fictional Characters from Books | |
| Juliet | f | Fictional Characters from Song Titles | |
| Juliet | f | Shakespearian Characters | |
| Juliet | f | Fictional Characters from Plays and Musicals, Shakespearian Characters | |
| Julietta | f | Saints | |
| Harald Julin | m | Olympic Medalists | |
| Julio | m | Fictional Characters from Song Titles | |
| Júlio César | m | Notable Athletes | |
| Julius I | m | Bishops of Rome and the Popes, Saints | |
| Julius II | m | Bishops of Rome and the Popes | |
| Julius III | m | Bishops of Rome and the Popes | |
| Julius Nepos | m | Roman and Byzantine Emperors | |
| Julius of Dorostorum | m | Saints | |
| Majorian | m | Roman and Byzantine Emperors | |
| Caligula | m | Roman and Byzantine Emperors | |
| Gaius Julius Caesar | m | Notable Military Figures, Notable Politicians and Statespeople, Shakespearian Characters | |
| June | f | Fictional Characters from Song Titles | |
| Jung Jae-sung | m | Olympic Medalists | |
| Jungkook | m | Notable Musicians | |
| Junia | f | Biblical Characters | |
| Jennifer Juniper | f | Fictional Characters from Song Titles | |
| Lucius Junius Brutus | m | Characters in Roman Mythology | |
| Leni Junker | f | Olympic Medalists | |
| Juno | f | Characters in Roman Mythology, Shakespearian Characters | |
| Julio Junyer Padern | m | Saints | |
| Arvydas Juozaitis | m | Olympic Medalists | |
| Cecelia Jupe | f | Fictional Characters from Books | |
| Jupiter | m | Biblical Characters, Characters in Roman Mythology, Shakespearian Characters | |
| Miles Jupp | m | Notable Actors and Entertainers | |
| Lana Jurčević | f | Notable Musicians | |
| Udo Jürgens | m | Eurovision Song Contest Winners, Notable Musicians | |
| Sonny Jurgensen | m | Hall-of-Famers | |
| Marija Jurić Zagorka | f | Notable Journalists, Notable Writers | |
| Tomi Jurić | m | Notable Athletes | |
| Andrius Jurkūnas | m | Olympic Medalists | |
| Jushab-Hesed | m | Biblical Characters | |
| Ibrica Jusić | m | Notable Musicians | |
| Justa | f | Saints | |
| Justin Martyr | m | Saints | |
| Justina | f | Saints | |
| Justinian II | m | Roman and Byzantine Emperors | |
| Justinian the Great | m | Roman and Byzantine Emperors, Saints | |
| Jutta of Kulmsee | f | Saints | |
| Juturna | f | Characters in Roman Mythology | |
| Juvenal | m | Notable Writers | |
| Ain Kaalep | m | Notable Writers | |
| Aleksandr Kabanov | m | Olympic Medalists | |
| Nika Kacharava | m | Notable Athletes | |
| Hrvoje Kačić | m | Olympic Medalists | |
| Lina Kačiušytė | f | Olympic Medalists | |
| Jane Kaczmarek | f | Notable Actors and Entertainers | |
| Géza Kádas | m | Olympic Medalists | |
| Kadmiel | m | Biblical Characters | |
| Kadmiel | m | Biblical Characters | |
| Maria Restituta Kafka | f | Saints | |
| Daan Kagchelland | m | Olympic Medalists | |
| Duke Kahanamoku | m | Notable Athletes, Olympic Medalists | |
| Frida Kahlo | f | Notable Artists | |
| Daniel Kahneman | m | Nobel Prize Winners, Notable Philosophers and Thinkers | |
| Kaika | m | Japanese Emperors, Other Mythological Characters | |
| Natasha Kaiser-Brown | f | Olympic Medalists | |
| Stien Kaiser | f | Olympic Medalists | |
| Kajita Takaaki | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Reika Kakiiwa | f | Olympic Medalists | |
| Thelma Kalama | f | Olympic Medalists | |
| Nikolay Kalashnikov | m | Olympic Medalists | |
| Birutė Kalėdienė | f | Olympic Medalists | |
| Kali | f | Characters in Hindu Mythology | |
| Preeya Kalidas | f | Notable Actors and Entertainers | |
| Manuella Kalili | m | Olympic Medalists | |
| Kaliman Asen II | m | Bulgarian Kings and Tsars | |
| Al Kaline | m | Hall-of-Famers, Notable Athletes | |
| Mindy Kaling | f | Notable Actors and Entertainers | |
| Mikhail Kalinin | m | Other Leaders | |
| Irina Kalinina | f | Olympic Medalists | |
| Rafał Kalinowski | m | Saints | |
| Kaliopi | f | Notable Musicians | |
| Charlotte Kalla | f | Olympic Medalists | |
| Kallai | m | Biblical Characters | |
| Kyösti Kallio | m | Finnish Presidents and Prime Ministers | |
| Antti Kalliomäki | m | Olympic Medalists | |
| Kálmán | m | Hungarian Kings and Queens | |
| Juris Kalniņš | m | Olympic Medalists | |
| Nikolaos Kalogeropoulos | m | Greek Prime Ministers | |
| Kaloyan | m | Bulgarian Kings and Tsars | |
| Daniel Kaluuya | m | Notable Actors and Entertainers, Oscar Award Winners | |
| Levan Kalyayev | m | Olympic Medalists | |
| Israel Kamakawiwo'ole | m | Notable Musicians | |
| Pontus Kåmark | m | Notable Athletes | |
| Federico Kammerichs | m | Olympic Medalists | |
| Anna-Karin Kammerling | f | Olympic Medalists | |
| Henk Kamp | m | Notable Politicians and Statespeople | |
| Gata Kamsky | m | Notable Athletes | |
| Kanaalaq | f | Fictional Characters from Movies | |
| Constantine Kanaris | m | Greek Prime Ministers | |
| Yevgeniya Kanayeva | f | Notable Athletes, Olympic Medalists | |
| Eric Kandel | m | Nobel Prize Winners | |
| Wassily Kandinsky | m | Notable Artists | |
| Carol Kane | f | Emmy Award Winners, Notable Actors and Entertainers | |
| Duncan Kane | m | Fictional Characters from Television | |
| Harry Kane | m | Notable Athletes | |
| Jimmy Kane | m | Fictional Characters from Song Titles | |
| Ichijo | m | Japanese Emperors | |
| Makoto Kaneko | m | Olympic Medalists | |
| Kang Min-ho | m | Olympic Medalists | |
| Kanō Jigorō | m | Notable Athletes | |
| Immanuel Kant | m | Notable Philosophers and Thinkers | |
| Leonid Kantorovich | m | Nobel Prize Winners, Notable Philosophers and Thinkers | |
| Lynn Kanuka-Williams | f | Olympic Medalists | |
| Charles K. Kao | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Anastasiya Kapachinskaya | f | Olympic Medalists | |
| Pyotr Kapitsa | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Kelly Kapowski | f | Fictional Characters from Television | |
| Marnix Kappers | m | Notable Actors and Entertainers | |
| Jan Kappeyne van de Coppello | m | Dutch Prime Ministers | |
| Vadim Kapranov | m | Olympic Medalists | |
| Vasiliy Kaptyukh | m | Olympic Medalists | |
| Denis Kapustin | m | Olympic Medalists | |
| Nikola Karabatić | m | Notable Athletes, Olympic Medalists | |
| Vladimir Karabutov | m | Olympic Medalists | |
| Kostas Karamanlis | m | Greek Prime Ministers | |
| Alyosha Karamazov | m | Fictional Characters from Books | |
| Fyodor Karamazov | m | Fictional Characters from Books | |
| Leo Karasuma | m | Saints | |
| Kardam | m | Bulgarian Kings and Tsars | |
| Khloé Kardashian | f | Notable Actors and Entertainers | |
| Kim Kardashian | f | Notable Actors and Entertainers | |
| Kourtney Kardashian | f | Notable Actors and Entertainers | |
| Rob Kardashian | m | Notable Actors and Entertainers | |
| Kareah | m | Biblical Characters | |
| Karl IV | m | Bohemian Kings, German Kings and Holy Roman Emperors | |
| Aleksandr Karelin | m | Notable Athletes, Olympic Medalists | |
| Karen | f | Hurricanes and Tropical Storms | |
| Anna Karenina | f | Fictional Characters from Books | |
| Alex Karev | m | Fictional Characters from Television | |
| Ahti Karjalainen | m | Finnish Presidents and Prime Ministers | |
| Igor Karkaroff | m | Harry Potter Characters | |
| Karl | m | Hurricanes and Tropical Storms | |
| Karl | m | Hurricanes and Tropical Storms | |
| Karl I | m | Austrian Dukes and Emperors, Bohemian Kings, Hungarian Kings and Queens, Saints | |
| Karl I (or VII) | m | Swedish Kings and Queens | |
| Karl II (or VIII) | m | Norwegian Kings and Queens, Swedish Kings and Queens | |
| Karl III the Fat | m | Frankish and French Kings, German Kings and Holy Roman Emperors | |
| Karl Ludwig of Liechtenstein | m | Other Royalty | |
| Karl V | m | Austrian Dukes and Emperors, German Kings and Holy Roman Emperors, Spanish Kings and Queens | |
| Karl VII Albrecht | m | Bohemian Kings, German Kings and Holy Roman Emperors | |
| Karl XIII | m | Norwegian Kings and Queens, Swedish Kings and Queens | |
| Karl XIV Johan | m | Norwegian Kings and Queens, Swedish Kings and Queens | |
| Karl XV | m | Norwegian Kings and Queens, Swedish Kings and Queens | |
| Violet Karl | f | Fictional Characters from Plays and Musicals | |
| Erik Axel Karlfeldt | m | Nobel Prize Winners, Notable Writers | |
| Boris Karloff | m | Notable Actors and Entertainers | |
| Maria Karlowska | f | Saints | |
| Mati Karmin | m | Notable Artists | |
| Richard Karn | m | Notable Actors and Entertainers | |
| Artūras Karnišovas | m | Olympic Medalists | |
| Yanina Karolchyk-Pravalinskaya | f | Olympic Medalists | |
| Karl VI | m | Austrian Dukes and Emperors, Bohemian Kings, German Kings and Holy Roman Emperors, Hungarian Kings and Queens | |
| Károly I | m | Hungarian Kings and Queens | |
| Károly II the Small | m | Hungarian Kings and Queens | |
| György Kárpáti | m | Olympic Medalists | |
| Gennadi Karponosov | m | Olympic Medalists | |
| Anatoliy Karpov | m | Notable Athletes | |
| Dmitriy Karpov | m | Olympic Medalists | |
| Alex Karras | m | Hall-of-Famers, Notable Athletes | |
| Paul Karrer | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Anatoliy Kartashov | m | Olympic Medalists | |
| Pierre Kartner | m | Notable Musicians | |
| Aki Karvonen | m | Olympic Medalists | |
| Zoltán Kásás | m | Olympic Medalists | |
| Lawrence Kasdan | m | Notable Filmmakers | |
| Casey Kasem | m | Notable Actors and Entertainers | |
| John Kasich | m | Notable Politicians and Statespeople | |
| Garry Kasparov | m | Notable Athletes | |
| Nimatullah Youssef Kassab Al-Hardini | m | Saints | |
| Alfred Kastler | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Go-Yozei | m | Japanese Emperors | |
| Jyrki Katainen | m | Finnish Presidents and Prime Ministers | |
| Katarina of Sweden | f | Saints | |
| Olivera Katarina | f | Notable Actors and Entertainers, Notable Musicians | |
| Kate | f | Hurricanes and Tropical Storms | |
| Kate | f | Fictional Characters from Song Titles | |
| Kate Svetlana | f | Fictional Characters from Books | |
| Katharine | f | Shakespearian Characters | |
| Katherine | f | Fictional Characters from Books | |
| Kathleen | f | Fictional Characters from Song Titles | |
| Katia | f | Hurricanes and Tropical Storms | |
| Katia | f | Hurricanes and Tropical Storms | |
| Lena Katina | f | Notable Musicians | |
| Kiyomi Kato | f | Olympic Medalists | |
| Katrina | f | Hurricanes and Tropical Storms | |
| Katrina | f | Hurricanes and Tropical Storms | |
| Alex Katsopolis | m | Fictional Characters from Television | |
| Jesse Katsopolis | m | Fictional Characters from Television | |
| Nicky Katsopolis | m | Fictional Characters from Television | |
| Kostas Katsouranis | m | Notable Athletes | |
| Marita Katusheva | f | Olympic Medalists | |
| Bernard Katz | m | Nobel Prize Winners | |
| Elias Katz | m | Olympic Medalists | |
| Jeffrey Katzenberg | m | Notable Businesspeople, Notable Filmmakers | |
| Carl Kaufmann | m | Olympic Medalists | |
| Sasha Kaun | m | Notable Athletes, Olympic Medalists | |
| Kavadh II | m | Persian and Iranian Kings and Queens | |
| Kawabata Yasunari | m | Nobel Prize Winners, Notable Writers | |
| Evelyn Kawamoto | f | Olympic Medalists | |
| Takeo Kawamura | m | Olympic Medalists | |
| Kentaro Kawatsu | m | Olympic Medalists | |
| Kay | f | Fictional Characters from Plays and Musicals | |
| Kayleigh | f | Fictional Characters from Song Titles | |
| Kayumars | m | Indian Sultans and Emperors | |
| Elia Kazan | m | Notable Filmmakers, Oscar Award Winners | |
| Tatyana Kazankina | f | Olympic Medalists | |
| Vladimir Kazantsev | m | Olympic Medalists | |
| Kazimierz I the Restorer | m | Polish High Dukes and Kings | |
| Kazimierz II the Just | m | Polish High Dukes and Kings | |
| Kazimierz III the Great | m | Polish High Dukes and Kings | |
| Kazimierz IV | m | Polish High Dukes and Kings | |
| Kazimierz of Poland | m | Saints | |
| Pua Kealoha | m | Notable Athletes, Olympic Medalists | |
| Warren Kealoha | m | Olympic Medalists | |
| Dolores Keane | f | Notable Actors and Entertainers, Notable Musicians | |
| Robbie Keane | m | Notable Athletes | |
| Rob Kearney | m | Notable Athletes | |
| Paul Keating | m | Australian Prime Ministers | |
| Andy Keaton | m | Fictional Characters from Television | |
| Buster Keaton | m | Notable Actors and Entertainers | |
| Diane Keaton | f | Notable Actors and Entertainers, Oscar Award Winners | |
| Gordon "Duke" Keats | m | Hall-of-Famers | |
| Tsegaye Kebede Wordofa | m | Olympic Medalists | |
| Kedar | m | Biblical Characters | |
| Kedemah | m | Biblical Characters | |
| Mohamed Kedir | m | Olympic Medalists | |
| Kedorlaomer | m | Biblical Characters | |
| Lila Kedrova | f | Notable Actors and Entertainers, Oscar Award Winners | |
| Tim Keefe | m | Hall-of-Famers, Notable Athletes | |
| Willie Keeler | m | Hall-of-Famers, Notable Athletes | |
| Will Keen | m | Notable Actors and Entertainers | |
| Max Keenan | m | Fictional Characters from Television | |
| Maynard James Keenan | m | Notable Musicians | |
| Case Keenum | m | Notable Athletes | |
| Hennie Keetelaar | m | Olympic Medalists | |
| Meb Keflezighi | m | Olympic Medalists | |
| Ray Kegeris | m | Olympic Medalists | |
| Frank Kehoe | m | Olympic Medalists | |
| Keiko | m | Japanese Emperors, Other Mythological Characters | |
| Keilah | m | Biblical Characters | |
| Harley Keiner | m | Fictional Characters from Television | |
| Kip Keino | m | Notable Athletes, Olympic Medalists | |
| Keith | m | Hurricanes and Tropical Storms | |
| Keith | m | Fictional Characters from Song Titles | |
| Piet Keizer | m | Notable Athletes | |
| Urho Kekkonen | m | Finnish Presidents and Prime Ministers | |
| Kelaiah | m | Biblical Characters | |
| Kelal | m | Biblical Characters | |
| Ágnes Keleti | f | Notable Athletes, Olympic Medalists | |
| Becky Kellar-Duke | f | Olympic Medalists | |
| Helen Keller | f | Notable Activists and Revolutionaries | |
| Allen Kelley | m | Olympic Medalists | |
| Dean Kelley | m | Olympic Medalists | |
| Joe Kelley | m | Hall-of-Famers | |
| Madison Kellner | f | Fictional Characters from Television | |
| Rosa Kellner | f | Olympic Medalists | |
| Frank B. Kellogg | m | Nobel Prize Winners | |
| Will Keith Kellogg | m | Notable Businesspeople | |
| Kelly | f | Fictional Characters from Movies | |
| Alex Kelly | f | Fictional Characters from Television | |
| Charlie Kelly | m | Fictional Characters from Television | |
| Daniel Kelly | m | Olympic Medalists | |
| Fred Kelly | m | Olympic Medalists | |
| Gene Kelly | m | Notable Actors and Entertainers | |
| George Kelly | m | Hall-of-Famers | |
| Hop Kelly | f | Fictional Characters from Plays and Musicals | |
| Jim Kelly | m | Hall-of-Famers, Notable Athletes | |
| Jimmy Kelly | m | Fictional Characters from Television | |
| Leonard "Red" Kelly | m | Hall-of-Famers, Notable Athletes | |
| Libby Kelly | f | Fictional Characters from Television | |
| Margaret Kelly-Hohmann | f | Olympic Medalists | |
| Megyn Kelly | f | Notable Journalists | |
| Michael Patrick Kelly | m | Notable Musicians | |
| Mike "King" Kelly | m | Hall-of-Famers | |
| Ned Kelly | m | Notable Evildoers | |
| R. Kelly | m | Notable Musicians | |
| Tacy Kelly | f | Fictional Characters from Books | |
| Kelsey | f | Fictional Characters from Song Titles | |
| Kelub | m | Biblical Characters | |
| Kelub | m | Biblical Characters | |
| Keluhi | m | Biblical Characters | |
| Kelzang Gyatso | m | Other Religious Leaders | |
| Yaşar Kemal | m | Notable Writers | |
| Jenny Kemp | f | Olympic Medalists | |
| Peter Kemp | m | Olympic Medalists | |
| Ellie Kemper | f | Notable Actors and Entertainers | |
| Mario Kempes | m | Notable Athletes | |
| Patty Kempner | f | Olympic Medalists | |
| Kenaanah | m | Biblical Characters | |
| Kenaanah | m | Biblical Characters | |
| Kenan | m | Biblical Characters | |
| Kenani | m | Biblical Characters | |
| Kenaniah | m | Biblical Characters | |
| Kenaniah | m | Biblical Characters | |
| Abe Kenarban | m | Fictional Characters from Television | |
| Stevie Kenarban | m | Fictional Characters from Television | |
| Henry Way Kendall | m | Nobel Prize Winners | |
| Martin Kendall | m | Fictional Characters from Television | |
| Olivia Kendall | f | Fictional Characters from Television | |
| John Kendrew | m | Nobel Prize Winners | |
| Eddie Kendricks | m | Rock and Roll Hall-of-Famers | |
| Cordelia Kenn | f | Fictional Characters from Books | |
| Cortez Kennedy | m | Hall-of-Famers | |
| Ella Lorena Kennedy | f | Fictional Characters from Books | |
| Frank Kennedy | m | Fictional Characters from Books | |
| George Kennedy | m | Notable Actors and Entertainers, Oscar Award Winners | |
| Jackie Kennedy | f | American First Ladies | |
| Jamie Kennedy | m | Notable Actors and Entertainers | |
| John F. Kennedy | m | American Presidents | |
| May Kennedy | f | Fictional Characters from Movies | |
| Ted Kennedy | m | Hall-of-Famers, Most Valuable Players, Notable Athletes | |
| William Kennedy | m | Pulitzer Award Winners | |
| Kenneth | m | Fictional Characters from Song Titles | |
| Bob Kenney | m | Olympic Medalists | |
| Laura Kenny | f | Olympic Medalists | |
| Clark Kent | m | Fictional Characters from Books, Fictional Characters from Movies | |
| Jeff Kent | m | Most Valuable Players, Notable Athletes | |
| Annie Kenyon | f | Fictional Characters from Books | |
| Dave Keon | m | Hall-of-Famers | |
| Johannes Kepler | m | Notable Scientists and Inventors | |
| Heidi Keppert | f | Fictional Characters from Television | |
| Francis Kerbiriou | m | Olympic Medalists | |
| Keren-Happuch | f | Biblical Characters | |
| Paul Keres | m | Notable Athletes | |
| Kirk Kerkorian | m | Notable Businesspeople | |
| Rob Kerkovich | m | Notable Actors and Entertainers | |
| Kermit the Frog | m | Fictional Characters from Television | |
| Jakob Kern | m | Saints | |
| Keros | m | Biblical Characters | |
| Jack Kerouac | m | Notable Writers | |
| Deborah Kerr | f | Notable Actors and Entertainers | |
| George Kerr | m | Olympic Medalists | |
| Harry Kerr | m | Olympic Medalists | |
| Robert Kerr | m | Olympic Medalists | |
| Patience Kershaw | f | Fictional Characters from Song Titles | |
| Imre Kertész | m | Nobel Prize Winners, Notable Writers | |
| Kesed | m | Biblical Characters | |
| Tereza Kesovija | f | Notable Musicians | |
| Wolfgang Ketterle | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Eddie Kettle | m | Fictional Characters from Plays and Musicals | |
| Keturah | f | Biblical Characters | |
| Kevin | m | Fictional Characters from Song Titles | |
| Achilleus Kewanuka | m | Saints | |
| Skandar Keynes | m | Notable Actors and Entertainers | |
| Alicia Keys | f | Grammy Award Winners, Notable Musicians | |
| Keziah | f | Biblical Characters | |
| Sergey Khachatryan | m | Notable Musicians | |
| Aram Khachaturian | m | Notable Musicians | |
| Aamir Khan | m | Notable Actors and Entertainers | |
| Joseph Khang | m | Saints | |
| Valeri Kharlamov | m | Hall-of-Famers, Notable Athletes | |
| Olha Kharlan | f | Notable Athletes, Olympic Medalists | |
| Kevin Khatchadourian | m | Fictional Characters from Books | |
| Omar Khayyám | m | Notable Philosophers and Thinkers, Notable Writers | |
| Khedrup Gyatso | m | Other Religious Leaders | |
| Khizr Khan | m | Indian Sultans and Emperors | |
| Vasiliy Khmelevskiy | m | Olympic Medalists | |
| Nadezhda Khnykina-Dvalishvili | f | Olympic Medalists | |
| Oleg Khodkov | m | Olympic Medalists | |
| Har Gobind Khorana | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Khosrau I the Just | m | Persian and Iranian Kings and Queens | |
| Khosrau II | m | Persian and Iranian Kings and Queens | |
| Ivanka Khristova | f | Olympic Medalists | |
| Tsvetanka Khristova | f | Olympic Medalists | |
| Nikita Khrushchev | m | Other Leaders | |
| Vyacheslav Khrynin | m | Olympic Medalists | |
| Yelena Khudashova | f | Olympic Medalists | |
| Irina Khudoroshkina | f | Olympic Medalists | |
| Khusro Khan | m | Indian Sultans and Emperors | |
| Khutughtu Khan | m | Chinese Emperors, Other Royalty | |
| Bert Kibbler | m | Fictional Characters from Television | |
| Dragan Kićanović | m | Olympic Medalists | |
| Jason Kidd | m | Hall-of-Famers, Notable Athletes, Olympic Medalists | |