| Name | Gender | Categories | |
|---|
| Isfrid of Ratzeburg | m | Saints |  |
| Andriy Ishchak | m | Saints | |
| Ishi | m | Biblical Characters | |
| Ishi | m | Biblical Characters | |
| Ishi | m | Biblical Characters | |
| Ishi | m | Biblical Characters | |
| Hirotoshi Ishii | m | Olympic Medalists | |
| Takashi Ishimoto | m | Olympic Medalists | |
| Ishmael | m | Biblical Characters | |
| Ishmael | m | Biblical Characters | |
| Ishmael | m | Biblical Characters | |
| Ishmael | m | Biblical Characters | |
| Ishmael | m | Biblical Characters | |
| Ishmael | m | Biblical Characters | |
| Isidore of Alexandria | m | Saints | |
| Isidore of Pelusium | m | Saints | |
| Isidore of Saint Joseph | m | Saints | |
| Isidore of Seville | m | Notable Philosophers and Thinkers, Saints | |
| Isidore the Farmer | m | Saints | |
| Halimat Ismaila | f | Olympic Medalists | |
| Thomas Ismay | m | Notable Businesspeople | |
| Sata Isobe | f | Olympic Medalists | |
| Yoko Isoda | f | Olympic Medalists | |
| Volmari Iso-Hollo | m | Olympic Medalists | |
| Rémy Isoré | m | Saints | |
| Issachar | m | Biblical Characters | |
| Dan Issel | m | Hall-of-Famers, Notable Athletes | |
| Fernand Isselé | m | Olympic Medalists | |
| Isshiah | m | Biblical Characters | |
| Isshiah | m | Biblical Characters | |
| Isshiah | m | Biblical Characters | |
| Isshiah | m | Biblical Characters | |
| Istucarius of Sebaste | m | Saints | |
| István II | m | Hungarian Kings and Queens | |
| István III | m | Hungarian Kings and Queens | |
| István IV | m | Hungarian Kings and Queens | |
| István V | m | Hungarian Kings and Queens | |
| Ita of Killeedy | f | Saints | |
| Tomohito Ito | m | Olympic Medalists | |
| Edgar Itt | m | Olympic Medalists | |
| Sándor Ivády | m | Olympic Medalists | |
| Ivailo | m | Bulgarian Kings and Tsars | |
| Ivan Asen I | m | Bulgarian Kings and Tsars | |
| Ivan Asen II | m | Bulgarian Kings and Tsars | |
| Ivan Asen III | m | Bulgarian Kings and Tsars | |
| Ivan I | m | Russian Grand Dukes and Tsars | |
| Ivan II | m | Russian Grand Dukes and Tsars | |
| Ivan III the Great | m | Russian Grand Dukes and Tsars | |
| Ivan IV the Terrible | m | Russian Grand Dukes and Tsars | |
| Ivan Shishman | m | Bulgarian Kings and Tsars | |
| Ivan Sratsimir | m | Bulgarian Kings and Tsars | |
| Ivan Stefan | m | Bulgarian Kings and Tsars | |
| Ivan V | m | Russian Grand Dukes and Tsars | |
| Ivan VI | m | Russian Grand Dukes and Tsars | |
| Ivan Vladislav | m | Bulgarian Kings and Tsars | |
| Paula Ivan | f | Olympic Medalists | |
| Todor Ivanchov | m | Bulgarian Presidents and Prime Ministers | |
| Vyacheslav Ivanenko | m | Olympic Medalists | |
| Anastasia Ivankova | f | Olympic Medalists | |
| Gjorge Ivanov | m | Other Leaders | |
| Vasili Ivanov | m | Olympic Medalists | |
| Natalya Ivanova | f | Olympic Medalists | |
| Olimpiada Ivanova | f | Olympic Medalists | |
| Oton Iveković | m | Notable Artists | |
| Allen Iverson | m | Hall-of-Famers, Most Valuable Players, Notable Athletes, Olympic Medalists | |
| Đurđa Ivezić | f | Notable Actors and Entertainers | |
| Ilija Ivezić | m | Notable Actors and Entertainers | |
| Vladimir Ivković | m | Olympic Medalists | |
| Ivo of Kermartin | m | Saints | |
| Hisashi Iwakuma | m | Olympic Medalists | |
| Kunihiro Iwasaki | m | Olympic Medalists | |
| Kyoko Iwasaki | f | Olympic Medalists | |
| Hitoki Iwase | m | Olympic Medalists | |
| Chuk Iwuji | m | Notable Actors and Entertainers | |
| Sanjo | m | Japanese Emperors | |
| Sandra Izbaşa | f | Olympic Medalists | |
| Iziaslav I | m | Russian Grand Dukes and Tsars | |
| Iziaslav II | m | Russian Grand Dukes and Tsars | |
| Iziaslav III | m | Russian Grand Dukes and Tsars | |
| Jaazaniah | m | Biblical Characters | |
| Jaazaniah | m | Biblical Characters | |
| Jaazaniah | m | Biblical Characters | |
| Jaazaniah | m | Biblical Characters | |
| Jabir ibn Hayyan | m | Notable Scientists and Inventors | |
| Daphne Jablonsky | f | Fictional Characters from Television | |
| Jachin | m | Biblical Characters | |
| Jachin | m | Biblical Characters | |
| Jachin | m | Biblical Characters | |
| Jack | m | Fictional Characters from Traditional Tales | |
| Andrew Jackson | m | American Presidents | |
| Arnold Jackson | m | Olympic Medalists | |
| Bob Jackson | m | Fictional Characters from Television | |
| Colin Jackson | m | Olympic Medalists | |
| Daniel Jackson | m | Fictional Characters from Movies, Fictional Characters from Television | |
| Glenda Jackson | f | Emmy Award Winners, Notable Actors and Entertainers, Oscar Award Winners | |
| Harvey "Busher" Jackson | m | Hall-of-Famers | |
| Janet Jackson | f | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Joanne Jackson | f | Olympic Medalists | |
| Malik Jackson | m | Notable Athletes | |
| Peter Jackson | m | Notable Filmmakers, Oscar Award Winners | |
| Phil Jackson | m | Hall-of-Famers | |
| Reggie Jackson | m | Hall-of-Famers, Most Valuable Players, Notable Athletes | |
| Rickey Jackson | m | Hall-of-Famers | |
| Samuel L. Jackson | m | Notable Actors and Entertainers | |
| Sarah Jackson | f | American First Ladies | |
| Tom Jackson | m | Notable Actors and Entertainers, Notable Musicians | |
| Travis Jackson | m | Hall-of-Famers | |
| Trina Jackson | f | Olympic Medalists | |
| François Jacob | m | Nobel Prize Winners | |
| Lisa Jacob | f | Olympic Medalists | |
| Derek Jacobi | m | Notable Actors and Entertainers | |
| David Jacobs | m | Olympic Medalists | |
| Devery Jacobs | f | Notable Actors and Entertainers | |
| Simmone Jacobs | f | Olympic Medalists | |
| Uwe Jacobsen | m | Olympic Medalists | |
| Jacobus of Voragine | m | Saints | |
| Joseph Marie Jacquard | m | Notable Scientists and Inventors | |
| Jean-Jacques Dessalines | m | Other Royalty | |
| Élisabeth-Claude Jacquet | f | Notable Musicians | |
| Jadwiga | f | Polish High Dukes and Kings, Saints | |
| Scott Jaffe | m | Olympic Medalists | |
| Raza Jaffrey | m | Notable Actors and Entertainers | |
| Monika Jagaciak | f | Notable Actors and Entertainers | |
| Mick Jagger | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Jahandar Shah | m | Indian Sultans and Emperors | |
| Jahath | m | Biblical Characters | |
| Jahath | m | Biblical Characters | |
| Jahath | m | Biblical Characters | |
| Jahath | m | Biblical Characters | |
| Jahath | m | Biblical Characters | |
| Jahaziel | m | Biblical Characters | |
| Jahaziel | m | Biblical Characters | |
| Jahaziel | m | Biblical Characters | |
| Jahaziel | m | Biblical Characters | |
| Jahaziel | m | Biblical Characters | |
| Jaime I the Conqueror | m | Spanish Kings and Queens | |
| Jaime II the Just | m | Spanish Kings and Queens | |
| Jaime of Bourbon-Parma | m | Other Royalty | |
| Jair | m | Biblical Characters | |
| Jair | m | Biblical Characters | |
| Jair | m | Biblical Characters | |
| Jair | m | Biblical Characters | |
| Jairzinho | m | Notable Athletes | |
| Maya Jama | f | Notable Actors and Entertainers | |
| James I | m | Scottish Kings and Queens | |
| James I | m | English and British Kings and Queens, Scottish Kings and Queens | |
| James II | m | Scottish Kings and Queens | |
| James II | m | English and British Kings and Queens, Scottish Kings and Queens | |
| James III | m | Scottish Kings and Queens | |
| James Intercisus | m | Saints | |
| James IV | m | Scottish Kings and Queens | |
| James of Nisibis | m | Saints | |
| James the Deacon | m | Saints | |
| James the Greater | m | Biblical Characters, Saints | |
| James the Just | m | Biblical Characters, Saints | |
| James V | m | Scottish Kings and Queens | |
| Angela James | f | Hall-of-Famers | |
| Eli James | m | Fictional Characters from Television | |
| Godfrey James | m | Notable Actors and Entertainers | |
| Henry James | m | Notable Writers | |
| Hilda James | f | Olympic Medalists | |
| Jesse James | m | Notable Evildoers | |
| Lennie James | m | Notable Actors and Entertainers | |
| Lily James | f | Notable Actors and Entertainers | |
| Marlon James | m | Notable Writers | |
| M. R. James | m | Notable Writers | |
| Paul James | m | Notable Athletes | |
| Rob James-Collier | m | Notable Actors and Entertainers | |
| Tom James | m | Olympic Medalists | |
| William James | m | Notable Philosophers and Thinkers | |
| Andy Jameson | m | Olympic Medalists | |
| Helen Jameson | f | Olympic Medalists | |
| Jerry Jamal "3J" Jameson | m | Fictional Characters from Television | |
| Sandy Jameson | f | Fictional Characters from Television | |
| Michael Jamieson | m | Olympic Medalists | |
| Jameela Jamil | f | Notable Actors and Entertainers | |
| Jamin | m | Biblical Characters | |
| Jamin | m | Biblical Characters | |
| Jamin | m | Biblical Characters | |
| Herbert Jamison | m | Olympic Medalists | |
| Mylène Jampanoï | f | Notable Actors and Entertainers | |
| Petter Jamvold | m | Olympic Medalists | |
| Jan I Albert | m | Polish High Dukes and Kings | |
| Jan II Casimir | m | Polish High Dukes and Kings | |
| Jan III | m | Polish High Dukes and Kings | |
| František Janda-Suk | m | Olympic Medalists | |
| Jane | f | English and British Kings and Queens | |
| Jang Hye-ock | f | Olympic Medalists | |
| Emil Jannings | m | Notable Actors and Entertainers, Oscar Award Winners | |
| János I Zápolya | m | Hungarian Kings and Queens | |
| János II Zsigmond Zápolya | m | Hungarian Kings and Queens | |
| Arnold Janssen | m | Saints | |
| Folke Jansson | m | Olympic Medalists | |
| Gustaf Jansson | m | Olympic Medalists | |
| John Jansson | m | Olympic Medalists | |
| Willem Janszoon | m | Notable Explorers and Adventurers | |
| Januarius | m | Saints | |
| Alexandre Jany | m | Olympic Medalists | |
| Dmitry Japarov | m | Olympic Medalists | |
| Anne Jardin | f | Olympic Medalists | |
| Jared | m | Biblical Characters | |
| Zbigniew Jaremski | m | Olympic Medalists | |
| Jarib | m | Biblical Characters | |
| Jarib | m | Biblical Characters | |
| Jarib | m | Biblical Characters | |
| Jarlath | m | Saints | |
| John Arthur Jarvis | m | Olympic Medalists | |
| Šarūnas Jasikevičius | m | Olympic Medalists | |
| Jason of Tarsus | m | Biblical Characters, Saints | |
| Rebecca Jasontek | f | Olympic Medalists | |
| Henri Jaspar | m | Belgian Prime Ministers | |
| Nesrin Javadzadeh | f | Notable Actors and Entertainers | |
| Sajid Javid | m | Notable Politicians and Statespeople | |
| "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 | |
| Susanthika Jayasinghe | f | Olympic Medalists | |
| Carlos Jayme | m | Olympic Medalists | |
| Michel Jazy | m | Olympic Medalists | |
| Jean I | m | Frankish and French Kings | |
| Jean II the Good | m | Frankish and French Kings | |
| Jean-Baptiste de La Salle | m | Saints | |
| Jean-Joseph, Marquis Dessolles | m | French Presidents and Prime Ministers | |
| Jean, Grand Duke of Luxembourg | m | Other Royalty | |
| Robert Jeangerard | m | Olympic Medalists | |
| Jeanne of Arc | f | Notable Military Figures, Saints, Shakespearian Characters | |
| Buddy Jeannette | m | Hall-of-Famers, Notable Athletes | |
| Constance Jeans | f | Olympic Medalists | |
| Jedaiah | m | Biblical Characters | |
| Jedaiah | m | Biblical Characters | |
| Jedaiah | m | Biblical Characters | |
| Jedaiah | m | Biblical Characters | |
| Jedaiah | m | Biblical Characters | |
| Jediael | m | Biblical Characters | |
| Jediael | m | Biblical Characters | |
| Jediael | m | Biblical Characters | |
| Jediael | m | Biblical Characters | |
| Martha Jefferson Randolph | f | American First Ladies | |
| Richard Jefferson | m | Olympic Medalists | |
| Thomas Jefferson | m | American Presidents | |
| Rhi Jeffrey | f | Olympic Medalists | |
| Will Jeffries | m | Fictional Characters from Television | |
| Jehiel | m | Biblical Characters | |
| Jehiel | m | Biblical Characters | |
| Jehiel | m | Biblical Characters | |
| Jehiel | m | Biblical Characters | |
| Jehiel | m | Biblical Characters | |
| Jehiel | m | Biblical Characters | |
| Jehiel | m | Biblical Characters | |
| Jehiel | m | Biblical Characters | |
| Jehiel | m | Biblical Characters | |
| Jehiel | m | Biblical Characters | |
| Jehoash | m | Biblical Characters, Israelite and Judean Kings | |
| Jehohanan | m | Biblical Characters | |
| Jehohanan | m | Biblical Characters | |
| Jehohanan | m | Biblical Characters | |
| Jehohanan | m | Biblical Characters | |
| Jehohanan | m | Biblical Characters | |
| Jehohanan | m | Biblical Characters | |
| Jehoiada | m | Biblical Characters | |
| Jehoiada | m | Biblical Characters | |
| Jehoiada | m | Biblical Characters | |
| Jehoiada | m | Biblical Characters | |
| Jehoiada | m | Biblical Characters | |
| Jehozabad | m | Biblical Characters | |
| Jehozabad | m | Biblical Characters | |
| Jehozabad | m | Biblical Characters | |
| Jeiel | m | Biblical Characters | |
| Jeiel | m | Biblical Characters | |
| Jeiel | m | Biblical Characters | |
| Jeiel | m | Biblical Characters | |
| Jeiel | m | Biblical Characters | |
| Jeiel | m | Biblical Characters | |
| Jeiel | m | Biblical Characters | |
| Jeiel | m | Biblical Characters | |
| Jeiel | m | Biblical Characters | |
| Jeiel | m | Biblical Characters | |
| Vladimir Jelčić | m | Notable Athletes, Olympic Medalists | |
| Viktor Jelenić | m | Olympic Medalists | |
| Pamela Jelimo | f | Olympic Medalists | |
| Elfriede Jelinek | f | Nobel Prize Winners, Notable Writers | |
| Sidney Jelinek | m | Olympic Medalists | |
| Martin Jellinghaus | m | Olympic Medalists | |
| Vinko Jelovac | m | Olympic Medalists | |
| Charles Jenkins Jr. | m | Olympic Medalists | |
| David Jenkins | m | Olympic Medalists | |
| Ferguson Jenkins | m | Hall-of-Famers, Notable Athletes | |
| Robert Jenkinson | m | British Prime Ministers | |
| Edward Jenner | m | Notable Scientists and Inventors | |
| Dorothy Jennings | f | Fictional Characters from Television | |
| Hughie Jennings | m | Hall-of-Famers | |
| Mark Jennings | m | Fictional Characters from Television | |
| Maureen Jennings | f | Notable Writers | |
| Pat Jennings | m | Notable Athletes | |
| J. Hans D. Jensen | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Johannes V. Jensen | m | Nobel Prize Winners, Notable Writers | |
| Marcus Jensen | m | Olympic Medalists | |
| Jeong Keun-woo | m | Olympic Medalists | |
| Eunice Jepkorir | f | Olympic Medalists | |
| Kevin Jepsen | m | Olympic Medalists | |
| Jerahmeel | m | Biblical Characters | |
| Jerahmeel | m | Biblical Characters | |
| Jerahmeel | m | Biblical Characters | |
| Jeremiah | m | Biblical Characters | |
| Jeremiah | m | Biblical Characters | |
| Jeremiah | m | Biblical Characters | |
| Jeremiah | m | Biblical Characters | |
| Jeremiah | m | Biblical Characters | |
| Jeremiah | m | Biblical Characters | |
| Jeremiah | m | Biblical Characters | |
| Jerimoth | m | Biblical Characters | |
| Jerimoth | m | Biblical Characters | |
| Jerimoth | m | Biblical Characters | |
| Jerimoth | m | Biblical Characters | |
| Jerimoth | m | Biblical Characters | |
| Jerimoth | m | Biblical Characters | |
| Jerimoth | m | Biblical Characters | |
| Željko Jerkov | m | Olympic Medalists | |
| Niels Kaj Jerne | m | Nobel Prize Winners | |
| Jeroham | m | Biblical Characters | |
| Jeroham | m | Biblical Characters | |
| Jeroham | m | Biblical Characters | |
| Jeroham | m | Biblical Characters | |
| Jeroham | m | Biblical Characters | |
| Jeroham | m | Biblical Characters | |
| Jeroham | m | Biblical Characters | |
| Jerome | m | Saints | |
| Jeshaiah | m | Biblical Characters | |
| Jeshaiah | m | Biblical Characters | |
| Jeshaiah | m | Biblical Characters | |
| Jeshaiah | m | Biblical Characters | |
| Jeshaiah | m | Biblical Characters | |
| Jeshaiah | m | Biblical Characters | |
| Jeshua | m | Biblical Characters | |
| Jeshua | m | Biblical Characters | |
| Jeshua | m | Biblical Characters | |
| Jeshua | m | Biblical Characters | |
| Jeshua | m | Biblical Characters | |
| Jeshua | m | Biblical Characters | |
| Jeshua | m | Biblical Characters | |
| Jeshua | m | Biblical Characters | |
| Jeshua | m | Biblical Characters | |
| Jeshua | m | Biblical Characters | |
| Jesus Christ | m | Biblical Characters, Notable Philosophers and Thinkers | |
| Jether | m | Biblical Characters | |
| Jether | m | Biblical Characters | |
| Jether | m | Biblical Characters | |
| Jether | m | Biblical Characters | |
| Jether | m | Biblical Characters | |
| James Jett | m | Olympic Medalists | |
| Jeuel | m | Biblical Characters | |
| Jeuel | m | Biblical Characters | |
| Jeuel | m | Biblical Characters | |
| Jeush | m | Biblical Characters | |
| Jeush | m | Biblical Characters | |
| Jeush | m | Biblical Characters | |
| Jeush | m | Biblical Characters | |
| Jeush | m | Biblical Characters | |
| Linda Jezek | f | Olympic Medalists | |
| Zdravko Ježić | m | Olympic Medalists | |
| Ji Xinpeng | m | Olympic Medalists | |
| Jiang Lin | m | Olympic Medalists | |
| Jiang Wenwen | f | Olympic Medalists | |
| Jiang Zemin | m | Other Leaders | |
| Jill | f | Fictional Characters from Traditional Tales | |
| Andrés Jiménez | m | Olympic Medalists | |
| Carlos Jiménez | m | Olympic Medalists | |
| Juan Ramón Jiménez | m | Nobel Prize Winners, Notable Writers | |
| Jingu | f | Japanese Emperors | |
| Joab | m | Biblical Characters | |
| Joab | m | Biblical Characters | |
| Joab | m | Biblical Characters | |
| Joachim of Denmark | m | Other Royalty | |
| Tom Joad | m | Fictional Characters from Books | |
| Joah | m | Biblical Characters | |
| Joah | m | Biblical Characters | |
| Joah | m | Biblical Characters | |
| Joah | m | Biblical Characters | |
| Joan of Aza | f | Saints | |
| João I the Good | m | Portuguese Kings and Queens | |
| João II | m | Portuguese Kings and Queens | |
| João III the Pious | m | Portuguese Kings and Queens | |
| João IV the Restorer | m | Portuguese Kings and Queens | |
| João V the Magnanimous | m | Portuguese Kings and Queens | |
| João VI | m | Portuguese Kings and Queens | |
| Brian Job | m | Olympic Medalists | |
| Jobab | m | Biblical Characters | |
| Jobab | m | Biblical Characters | |
| Jobab | m | Biblical Characters | |
| Jobab | m | Biblical Characters | |
| Jobab | m | Biblical Characters | |
| Steve Jobs | m | Notable Businesspeople | |
| Eddie Jobson | m | Rock and Roll Hall-of-Famers | |
| Billy Joel | m | Grammy Award Winners, Notable Musicians, Rock and Roll Hall-of-Famers | |
| Hans | m | Danish Kings and Queens, Norwegian Kings and Queens, Swedish Kings and Queens | |
| Johan I | m | Swedish Kings and Queens | |
| Johan III | m | Swedish Kings and Queens | |
| Johanan | m | Biblical Characters | |
| Johanan | m | Biblical Characters | |
| Johanan | m | Biblical Characters | |
| Johanan | m | Biblical Characters | |
| Johanan | m | Biblical Characters | |
| Johanan | m | Biblical Characters | |
| Johanan | m | Biblical Characters | |
| Johanan | m | Biblical Characters | |
| Johanan | m | Biblical Characters | |
| Johanan | m | Biblical Characters | |
| Johanan | m | Biblical Characters | |
| Johanan | m | Biblical Characters | |
| Johanna Beatrix, Princess of Liechtenstein | f | Other Royalty | |
| John I Tzimisces | m | Roman and Byzantine Emperors | |
| John II Comnenus | m | Roman and Byzantine Emperors | |
| John IV Lascaris | m | Roman and Byzantine Emperors | |
| John VI Cantacuzenus | m | Roman and Byzantine Emperors | |
| John VII Palaeologus | m | Roman and Byzantine Emperors | |
| John VIII Palaeologus | m | Roman and Byzantine Emperors | |
| Patrekur Jóhannesson | m | Notable Athletes | |
| Gerald Johanssen | m | Fictional Characters from Television | |
| Erik Johansson | m | Notable Athletes | |
| Gösta Johansson | m | Olympic Medalists | |
| Ingemar Johansson | m | Olympic Medalists | |
| Nils Johansson | m | Olympic Medalists | |
| Scarlett Johansson | f | Notable Actors and Entertainers | |
| "Scatman" John | m | Notable Musicians | |
| John | m | Bishops of Rome and the Popes | |
| John | m | Bishops of Rome and the Popes | |
| John | m | English and British Kings and Queens, Shakespearian Characters | |
| John Cassian | m | Saints | |
| John Chrysostom | m | Saints | |
| John Climacus | 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 | Coptic Popes and Patriarchs of Alexandria | |
| 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 Obi Mikel | m | Notable Athletes | |
| John of Beverley | m | Saints | |
| John of Bridlington | m | Saints | |
| John of Constantinople | m | Saints | |
| John of Damascus | m | Saints | |
| John of Egypt | m | Saints | |
| John of Gorze | m | Saints | |
| John of Lodi | m | Saints | |
| John of Matera | m | Saints | |
| John of Matha | m | Saints | |
| John of Meda | m | Saints | |
| John of Parma | m | Saints | |
| John of the Grating | m | Saints | |
| John of Vercelli | 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 Almsgiver | m | Saints | |
| John the Apostle | m | Biblical Characters, Saints | |
| John the Baptist | m | Biblical Characters, Saints | |
| John the Hermit | m | Saints | |
| John the Iberian | m | Saints | |
| John the Silent | m | Saints | |
| 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 | |
| Elton John | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Sabine John | f | Olympic Medalists | |
| Louise Jöhncke | f | Olympic Medalists | |
| Jasper Johns | m | Notable Artists | |
| Allen Johnson | m | Olympic Medalists | |
| Andre "Junior" Johnson Jr. | m | Fictional Characters from Television | |
| Andrew Johnson | m | American Presidents | |
| Arte Johnson | m | Notable Actors and Entertainers | |
| Ben Johnson | m | Olympic Medalists | |
| Brian Johnson | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Butch Johnson | m | Olympic Medalists | |
| Claudia "Lady Bird" Johnson | f | American First Ladies | |
| Dennis Johnson | m | Hall-of-Famers, Notable Athletes | |
| Devante Johnson | m | Fictional Characters from Television | |
| Diane Johnson | f | Fictional Characters from Television | |
| Dre Johnson | m | Fictional Characters from Television | |
| Earl "Pops" Johnson | m | Fictional Characters from Television | |
| Earvin "Magic" Johnson | m | Hall-of-Famers, Most Valuable Players, Notable Athletes, Olympic Medalists | |
| Eliza Johnson | f | American First Ladies | |
| Eric Johnson | m | Notable Actors and Entertainers | |
| Ernie "Moose" Johnson | m | Hall-of-Famers | |
| Eyvind Johnson | m | Nobel Prize Winners, Notable Writers | |
| 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 | |
| Jan Johnson | m | Olympic Medalists | |
| Jimmy Johnson | m | Hall-of-Famers | |
| Joey Johnson | m | Fictional Characters from Television | |
| John Henry Johnson | m | Hall-of-Famers | |
| Josephine Johnson | f | Pulitzer Award Winners | |
| Judy Johnson | m | Hall-of-Famers | |
| Lawrence Johnson | m | Olympic Medalists | |
| Lyndon B. Johnson | m | American Presidents | |
| Marvin Johnson | m | Fictional Characters from Television | |
| Maxine Johnson | f | Fictional Characters from Television | |
| Rafer Johnson | m | Olympic Medalists | |
| Rainbow "Bow" Johnson | f | Fictional Characters from Television | |
| Robert Johnson | m | Saints | |
| 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 | |
| Thomas Johnson | m | Saints | |
| Timothy Johnson | m | Fictional Characters from Television | |
| Tom Johnson | m | Hall-of-Famers, Notable Athletes | |
| Walter Johnson | m | Hall-of-Famers, Most Valuable Players, Notable Athletes | |
| William "Skinny" Johnson | m | Hall-of-Famers | |
| Abigail Johnston | f | Olympic Medalists | |
| Neil Johnston | m | Hall-of-Famers, Notable Athletes | |
| Sue Johnston | f | Notable Actors and Entertainers | |
| Joiarib | m | Biblical Characters | |
| Joiarib | m | Biblical Characters | |
| Joiarib | m | Biblical Characters | |
| Joiarib | m | Biblical Characters | |
| Charlie Joiner | m | Hall-of-Famers | |
| Predrag Jokić | m | Olympic Medalists | |
| Aurèle Joliat | m | Hall-of-Famers, Most Valuable Players, Notable Athletes | |
| Frédéric Joliot-Curie | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Irène Joliot-Curie | f | Nobel Prize Winners, Notable Scientists and Inventors | |
| Jón Ögmundsson | m | Saints | |
| Daniel Jonas | m | Fictional Characters from Television | |
| Arthur Jonath | m | Olympic Medalists | |
| Alun Wyn Jones | m | Notable Athletes | |
| Bobby Jones | m | Notable Athletes | |
| Brian Jones | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Calliope Jones | f | Fictional Characters from Television | |
| Cappie Jones | m | Fictional Characters from Television | |
| David "Deacon" Jones | m | Hall-of-Famers | |
| Donald Jones | m | Notable Actors and Entertainers | |
| Edward Jones | m | Saints | |
| Edward P. Jones | m | Pulitzer Award Winners | |
| Erasmus Jones | m | Fictional Characters from Television | |
| Finn Jones | m | Notable Actors and Entertainers | |
| Gary Jones | m | Notable Actors and Entertainers | |
| George Jones | m | Notable Musicians | |
| Jacque Jones | m | Olympic Medalists | |
| Jade Jones | f | Olympic Medalists | |
| James Earl Jones | m | Emmy Award Winners, Notable Actors and Entertainers | |
| Jennifer Jones | f | Notable Actors and Entertainers, Oscar Award Winners | |
| Jenny Jones | f | Olympic Medalists | |
| John Jones | m | Saints | |
| John Paul Jones | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| K. C. Jones | m | Hall-of-Famers, Notable Athletes, Olympic Medalists | |
| Ken Jones | m | Olympic Medalists | |
| Lam Jones | m | Olympic Medalists | |
| Mandana Jones | f | Notable Actors and Entertainers | |
| Mark Lewis Jones | m | Notable Actors and Entertainers | |
| Matt Jones | m | Notable Actors and Entertainers | |
| Michellie Jones | f | Olympic Medalists | |
| Phil Jones | m | Notable Athletes | |
| Sam Jones | m | Hall-of-Famers, Notable Athletes | |
| Samantha Jones | f | Fictional Characters from Television | |
| Stan Jones | m | Hall-of-Famers | |
| Terry Jones | m | Notable Actors and Entertainers, Notable Filmmakers | |
| Wallace Jones | m | Olympic Medalists | |
| Ben Jonson | m | Notable Writers | |
| Spike Jonze | m | Notable Filmmakers | |
| Scott Joplin | m | Notable Musicians | |
| Trudy Joplin | f | Fictional Characters from Television | |
| Jordan of Saxony | m | Saints | |
| Henry Jordan | m | Hall-of-Famers | |
| Julie Jordan | f | Fictional Characters from Plays and Musicals | |
| Shaun Jordan | m | Olympic Medalists | |
| Spencer Jordan | m | Fictional Characters from Television | |
| José de Anchieta | m | Saints | |
| José I the Reformer | m | Portuguese Kings and Queens | |
| Josef Emanuel of Liechtenstein | m | Other Royalty | |
| Enar Josefsson | m | Olympic Medalists | |
| Joseph Abibos | 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 Justus | m | Biblical Characters, Saints | |
| Joseph of Arimathea | m | Biblical Characters, Saints | |
| Joseph of Volokolamsk | m | Saints | |
| Joseph the Hymnographer | m | Saints | |
| Joseph Thi Dang Le | m | Saints | |
| Joseph Vien Dinh Dang | m | Saints | |
| Jonathan Joseph | m | Notable Athletes | |
| Paterson Joseph | m | Notable Actors and Entertainers | |
| Joséphine of Belgium | f | Other Royalty | |
| Brian David Josephson | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Karen Josephson | f | Olympic Medalists | |
| Sarah Josephson | f | Olympic Medalists | |
| Josephus | m | Notable Philosophers and Thinkers | |
| Joshua | m | Biblical Characters | |
| Joshua | m | Biblical Characters | |
| Joshua | m | Biblical Characters | |
| Joshua | m | Biblical Characters | |
| Anthony Joshua | m | Notable Athletes, Olympic Medalists | |
| Addie Joss | m | Hall-of-Famers, Notable Athletes | |
| Jotham | m | Biblical Characters, Israelite and Judean Kings | |
| Léon Jouhaux | m | Nobel Prize Winners | |
| James Prescott Joule | m | Notable Scientists and Inventors | |
| Sergėjus Jovaiša | m | Olympic Medalists | |
| Jovan Nenad | m | Serbian Kings, Tsars and Princes | |
| Božidar Jović | m | Notable Athletes, Olympic Medalists | |
| James Joyce | m | Notable Writers | |
| Kara Lynn Joyce | f | Olympic Medalists | |
| Jackie Joyner-Kersee | f | Notable Athletes, Olympic Medalists | |
| Jozabad | m | Biblical Characters | |
| Jozabad | m | Biblical Characters | |
| Jozabad | m | Biblical Characters | |
| Jozabad | m | Biblical Characters | |
| Jozabad | m | Biblical Characters | |
| Jozabad | m | Biblical Characters | |
| Jozabad | m | Biblical Characters | |
| Jozabad | m | Biblical Characters | |
| Jozabad | m | Biblical Characters | |
| Jozabad | m | Biblical Characters | |
| Joseph II | m | Austrian Dukes and Emperors, Bohemian Kings, German Kings and Holy Roman Emperors, Hungarian Kings and Queens | |
| 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 | |
| Juan Macías | m | Saints | |
| Juana the Mad | f | Spanish Kings and Queens | |
| Alberto Juantorena | m | Olympic Medalists | |
| Jubal | m | Biblical Characters | |
| Judas Cyriacus | m | Saints | |
| Judas Thaddaeus | m | Biblical Characters, Saints | |
| Judicael ap Hoel | m | Saints | |
| Dagny Juel-Przybyszewska | f | Other Notables | |
| Jeanne Jugan | f | Saints | |
| Mirna Jukić | f | Olympic Medalists | |
| Julia | f | Hurricanes and Tropical Storms | |
| Julia of Corsica | f | Saints | |
| Julia of Merida | f | Saints | |
| Julian of Antioch | m | Saints | |
| Julian of Sora | m | Saints | |
| Caroline Julian | f | Fictional Characters from Television | |
| Cyril Julian | m | Olympic Medalists | |
| Juliana of Mount Cornillon | f | Saints | |
| Juliana of Nicomedia | f | Saints | |
| Juliana of Norwich | f | Saints | |
| Juliana of the Netherlands | f | Other Royalty | |
| Julietta | f | Saints | |
| 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 | |
| Julius of Novara | m | Saints | |
| Julius of Rome | m | Saints | |
| Majorian | m | Roman and Byzantine Emperors | |
| Caligula | m | Roman and Byzantine Emperors | |
| Carl Jung | m | Notable Philosophers and Thinkers | |
| Jung Gil-ok | f | Olympic Medalists | |
| Jung Jin-sun | m | Olympic Medalists | |
| Stefan Junge | m | Olympic Medalists | |
| Junian of Mairé | m | Saints | |
| Bruno Junk | m | Olympic Medalists | |
| Oriol Junqueras i Vies | m | Notable Philosophers and Thinkers, Notable Politicians and Statespeople | |
| Arvydas Juozaitis | m | Olympic Medalists | |
| Jupiter | m | Biblical Characters, Characters in Roman Mythology, Shakespearian Characters | |
| Darija Jurak | f | Notable Athletes | |
| Udo Jürgens | m | Eurovision Song Contest Winners, Notable Musicians | |
| Sonny Jurgensen | m | Hall-of-Famers | |
| Andrius Jurkūnas | m | Olympic Medalists | |
| Justin Martyr | m | Saints | |
| Justin of Chieti | m | Saints | |
| Justinian II | m | Roman and Byzantine Emperors | |
| Justinian the Great | m | Roman and Byzantine Emperors, Saints | |
| Justus of Trieste | m | Saints | |
| Jutta of Kulmsee | f | Saints | |
| Juventinus | m | Saints | |
| Aleksandr Kabanov | m | Olympic Medalists | |
| Davit Kacharava | m | Notable Athletes | |
| Ena Kadić | m | Notable Actors and Entertainers | |
| Hakeem Kae-Kazim | m | Notable Actors and Entertainers | |
| Franz Kafka | m | Notable Writers | |
| Andrew Kaggwa | m | Saints | |
| Samuel Kahanamoku | m | Olympic Medalists | |
| Frida Kahlo | f | Notable Artists | |
| Daniel Kahneman | m | Nobel Prize Winners, Notable Philosophers and Thinkers | |
| Johannes Kaiser | m | Olympic Medalists | |
| Maiola Kalili | m | Olympic Medalists | |
| Manuella Kalili | m | Olympic Medalists | |
| Kaliman Asen I | m | Bulgarian Kings and Tsars | |
| Kaliman Asen II | m | Bulgarian Kings and Tsars | |
| Yuliya Kalina | f | Olympic Medalists | |
| Al Kaline | m | Hall-of-Famers, Notable Athletes | |
| Rafał Kalinowski | m | Saints | |
| Antti Kalliomäki | m | Olympic Medalists | |
| Kálmán | m | Hungarian Kings and Queens | |
| Maria Kalmykova | f | Olympic Medalists | |
| Jagoda Kaloper | f | Notable Actors and Entertainers, Notable Artists | |
| Kaloyan | m | Bulgarian Kings and Tsars | |
| Daniel Kaluuya | m | Notable Actors and Entertainers, Oscar Award Winners | |
| Idriss Carlos Kameni | m | Notable Athletes | |
| Anna-Karin Kammerling | f | Olympic Medalists | |
| Davis Kamoga | m | Olympic Medalists | |
| Constantine Kanaris | m | Greek Prime Ministers | |
| Yevgeniya Kanayeva | f | Notable Athletes, Olympic Medalists | |
| Eric Kandel | m | Nobel Prize Winners | |
| Wassily Kandinsky | m | Notable Artists | |
| Christopher Kane | m | Notable Artists | |
| Duncan Kane | m | Fictional Characters from Television | |
| Ichijo | m | Japanese Emperors | |
| Ethan Kanin | m | Fictional Characters from Television | |
| Bernd Kannenberg | m | Olympic Medalists | |
| Immanuel Kant | m | Notable Philosophers and Thinkers | |
| Tapio Kantanen | m | Olympic Medalists | |
| Denny Kantono | m | Olympic Medalists | |
| MacKinlay Kantor | m | Pulitzer Award Winners | |
| Leonid Kantorovich | m | Nobel Prize Winners, Notable Philosophers and Thinkers | |
| Charles K. Kao | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Pyotr Kapitsa | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Joe Kaplan | m | Fictional Characters from Television | |
| Ekta Kapoor | f | Notable Filmmakers | |
| Ravi Kapoor | m | Notable Actors and Entertainers | |
| Shobu Kapoor | f | Notable Actors and Entertainers | |
| Kelly Kapowski | f | Fictional Characters from Television | |
| Vasiliy Kaptyukh | m | Olympic Medalists | |
| Denis Kapustin | m | Olympic Medalists | |
| Reşit Karabacak | m | Notable Athletes | |
| Eftychia Karagianni | f | Olympic Medalists | |
| Angeliki Karapataki | f | Olympic Medalists | |
| Leo Karasuma | m | Saints | |
| Kardam | m | Bulgarian Kings and Tsars | |
| Karl IV | m | Bohemian Kings, German Kings and Holy Roman Emperors | |
| Nikolaos Karelis | m | Notable Athletes | |
| Karen | f | Hurricanes and Tropical Storms | |
| Krišjānis Kariņš | m | Latvian Presidents and Prime Ministers | |
| Julius Kariuki | m | Olympic Medalists | |
| 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 IX | m | Swedish Kings and Queens | |
| 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 X Gustav | m | Swedish Kings and Queens | |
| Karl XI | m | Swedish Kings and Queens | |
| Karl XII | m | Swedish Kings and Queens | |
| 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 | |
| Jerome Karle | m | Nobel Prize Winners | |
| Erik Axel Karlfeldt | m | Nobel Prize Winners, Notable Writers | |
| Tawakkol Karman | f | Nobel Prize Winners | |
| 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 | |
| Martin Karplus | m | Nobel Prize Winners | |
| Anatoliy Karpov | m | Notable Athletes | |
| Dmitriy Karpov | m | Olympic Medalists | |
| Marina Karpunina | f | Olympic Medalists | |
| Paul Karrer | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Monmu | m | Japanese Emperors | |
| Veikko Karvonen | m | Olympic Medalists | |
| Tamás Kásás | m | Olympic Medalists | |
| Zoltán Kásás | m | Olympic Medalists | |
| Dionysios Kasdaglis | m | Olympic Medalists | |
| Igor Kashkarov | m | Olympic Medalists | |
| Dagmar Käsling | f | Olympic Medalists | |
| Šárka Kašpárková | f | Olympic Medalists | |
| Nimatullah Youssef Kassab Al-Hardini | m | Saints | |
| Robert Kasting | m | Olympic Medalists | |
| Alfred Kastler | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Antti Kasvio | m | Olympic Medalists | |
| Erkki Kataja | m | Olympic Medalists | |
| Katarina of Sweden | f | Saints | |
| Kate | f | Hurricanes and Tropical Storms | |
| Ryohei Kato | m | Olympic Medalists | |
| András Katona | m | Olympic Medalists | |
| Alex Katsopolis | m | Fictional Characters from Television | |
| Jesse Katsopolis | m | Fictional Characters from Television | |
| Nicky Katsopolis | m | Fictional Characters from Television | |
| Katsushika Hokusai | m | Notable Artists | |
| Ryszard Katus | m | Olympic Medalists | |
| Bernard Katz | m | Nobel Prize Winners | |
| Elias Katz | m | Olympic Medalists | |
| Klaus Katzur | m | Olympic Medalists | |
| Evelyn Kaufer | f | Olympic Medalists | |
| Carl Kaufmann | m | Olympic Medalists | |
| Elfriede Kaun | f | Olympic Medalists | |
| Sasha Kaun | m | Notable Athletes, Olympic Medalists | |
| Satish Kaushik | m | Notable Actors and Entertainers, Notable Filmmakers | |
| Kavadh I | m | Persian and Iranian Kings and Queens | |
| Kavadh II | m | Persian and Iranian Kings and Queens | |
| Kaveh the blacksmith | m | Characters in Persian Mythology | |
| Shinichiro Kawabata | m | Olympic Medalists | |
| Kawabata Yasunari | m | Nobel Prize Winners, Notable Writers | |
| Miho Kawabe | f | Olympic Medalists | |
| Tatsugo Kawaishi | m | Olympic Medalists | |
| Evelyn Kawamoto | f | Olympic Medalists | |
| Akiko Kawase | f | Olympic Medalists | |
| Kentaro Kawatsu | m | Olympic Medalists | |
| Gorden Kaye | m | Notable Actors and Entertainers | |
| Tony Kaye | m | Rock and Roll Hall-of-Famers | |
| Oluyemi Kayode | m | Olympic Medalists | |
| Elia Kazan | m | Notable Filmmakers, Oscar Award Winners | |
| Akezhan Kazhegeldin | m | Other Leaders | |
| 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 | |
| Helen "Nana" Keane | f | Fictional Characters from Television | |
| Susan Keane | f | Fictional Characters from Television | |
| Hannah Kearney | f | Olympic Medalists | |
| Paul Keating | m | Australian Prime Ministers | |
| Andy Keaton | m | Fictional Characters from Television | |
| Elyse Keaton | f | Fictional Characters from Television | |
| Jennifer Keaton | f | Fictional Characters from Television | |
| Mallory Keaton | f | Fictional Characters from Television | |
| Michael Keaton | m | Notable Actors and Entertainers | |
| Steven Keaton | m | Fictional Characters from Television | |
| Gordon "Duke" Keats | m | Hall-of-Famers | |
| John Keats | m | Notable Writers | |
| Tsegaye Kebede Wordofa | m | Olympic Medalists | |
| Vyacheslav Kebich | m | Other Leaders | |
| Lila Kedrova | f | Notable Actors and Entertainers, Oscar Award Winners | |
| Tim Keefe | m | Hall-of-Famers, Notable Athletes | |
| David Keel | m | Fictional Characters from Television | |
| 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 | |
| Mimi Keene | f | Notable Actors and Entertainers | |
| Cynthia Keener | f | Fictional Characters from Television | |
| Jules Keignaert | m | Olympic Medalists | |
| Harley Keiner | m | Fictional Characters from Television | |
| Kip Keino | m | Notable Athletes, Olympic Medalists | |
| Naman Keïta | m | Olympic Medalists | |
| Keitai | m | Japanese Emperors | |
| Harvey Keitel | m | Notable Actors and Entertainers | |
| David Keith | m | Notable Actors and Entertainers | |
| Anastasia Kelesidou | f | Olympic Medalists | |
| George Kell | m | Hall-of-Famers, Notable Athletes | |
| Christian Keller | m | Olympic Medalists | |
| John Keller | m | Olympic Medalists | |
| Allen Kelley | m | Olympic Medalists | |
| Joe Kelley | m | Hall-of-Famers | |
| Gyula Kellner | m | Olympic Medalists | |
| Madison Kellner | f | Fictional Characters from Television | |
| Paul Kellner | m | Olympic Medalists | |
| Rosa Kellner | f | Olympic Medalists | |
| Frank B. Kellogg | m | Nobel Prize Winners | |
| Alex Kelly | f | Fictional Characters from Television | |
| Angelo Kelly | m | Notable Musicians | |
| Charlie Kelly | m | Fictional Characters from Television | |
| David Kelly | m | Notable Actors and Entertainers | |
| Ellsworth Kelly | m | Notable Artists | |
| Gene Kelly | m | Notable Actors and Entertainers | |
| George Kelly | m | Hall-of-Famers | |
| Grace Kelly | f | Fictional Characters from Television | |
| Jim Kelly | m | Hall-of-Famers, Notable Athletes | |
| Jimmy Kelly | m | Fictional Characters from Television | |
| John Kelly | m | Fictional Characters from Television | |
| Leonard "Red" Kelly | m | Hall-of-Famers, Notable Athletes | |
| Leroy Kelly | m | Hall-of-Famers | |
| Libby Kelly | f | Fictional Characters from Television | |
| Margaret Kelly-Hohmann | f | Olympic Medalists | |
| Mike "King" Kelly | m | Hall-of-Famers | |
| Patrick Kelly | m | Fictional Characters from Television | |
| Quentin Kelly | m | Fictional Characters from Television | |
| Tacy Kelly | f | Fictional Characters from Books | |
| James Kelman | m | Notable Writers | |
| Gloria Kemasuode | f | Olympic Medalists | |
| Peter Kemp | m | Olympic Medalists | |
| Robbert Kempermann | m | Olympic Medalists | |
| Mario Kempes | m | Notable Athletes | |
| Kemuel | m | Biblical Characters | |
| Kemuel | m | Biblical Characters | |
| Kemuel | m | Biblical Characters | |
| Stevie Kenarban | m | Fictional Characters from Television | |
| Kenaz | m | Biblical Characters | |
| Kenaz | m | Biblical Characters | |
| Kenaz | m | Biblical Characters | |
| Kenaz | m | Biblical Characters | |
| Edward Calvin Kendall | m | Nobel Prize Winners | |
| Henry Way Kendall | m | Nobel Prize Winners | |
| Jill Kendall | f | Fictional Characters from Television | |
| Martin Kendall | m | Fictional Characters from Television | |
| Olivia Kendall | f | Fictional Characters from Television | |
| John Kendrew | m | Nobel Prize Winners | |
| György Kenéz | m | Olympic Medalists | |
| Johan Kenkhuis | m | Olympic Medalists | |
| Kennedy | f | Fictional Characters from Television | |
| A. L. Kennedy | f | Notable Writers | |
| Angela Kennedy | f | Olympic Medalists | |
| Cortez Kennedy | m | Hall-of-Famers | |
| Courtney Kennedy | f | Olympic Medalists | |
| 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 | |
| John F. Kennedy | m | American Presidents | |
| Patrick Kennedy | m | Notable Actors and Entertainers | |
| Ted Kennedy | m | Hall-of-Famers, Most Valuable Players, Notable Athletes | |
| Colin Kenny | m | Notable Actors and Entertainers | |
| Jason Kenny | m | Notable Athletes, Olympic Medalists | |
| Muhtar Kent | m | Notable Businesspeople | |
| Kostas Kenteris | m | Olympic Medalists | |
| Kentigerna | f | Saints | |
| Gus Kenworthy | m | Olympic Medalists | |
| Sherrilyn Kenyon | f | Notable Writers | |
| Richard Keogh | m | Notable Athletes | |
| 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 | |
| Jean Kerebel | m | Olympic Medalists | |
| Paul Keres | m | Notable Athletes | |
| Frank Kermode | m | Notable Writers | |
| Jack Kerouac | m | Notable Writers | |
| Jane Kerr | f | Olympic Medalists | |
| Katharine Kerr | f | Notable Writers | |
| Philip Kerr | m | Notable Writers | |
| Mark Kerry | m | Olympic Medalists | |
| Seána Kerslake | f | Notable Actors and Entertainers | |
| Imre Kertész | m | Nobel Prize Winners, Notable Writers | |
| Alajos Keserű | m | Olympic Medalists | |
| Ferenc Keserű | m | Olympic Medalists | |
| Kessog | m | Saints | |
| Dan Ketchum | m | Olympic Medalists | |
| Joseph Keter | m | Olympic Medalists | |
| Wolfgang Ketterle | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Dale Kettlewell | m | Fictional Characters from Television | |
| Achilleus Kewanuka | m | Saints | |
| John Maynard Keynes | m | Notable Philosophers and Thinkers | |
| Alicia Keys | f | Grammy Award Winners, Notable Musicians | |
| Gwyneth Keyworth | f | Notable Actors and Entertainers | |
| Zsuzsanna Kézi | f | Olympic Medalists | |
| Irina Khabarova | f | Olympic Medalists | |
| Vadim Khamuttskikh | m | Olympic Medalists | |
| Arbaaz Khan | m | Notable Actors and Entertainers | |
| Ayub Khan-Din | m | Notable Actors and Entertainers | |
| Sadiq Khan | m | Notable Politicians and Statespeople | |
| Zak Khan | m | Fictional Characters from Television | |
| Joseph Khang | m | Saints | |
| Valeri Kharlamov | m | Hall-of-Famers, Notable Athletes | |
| Olha Kharlan | f | Notable Athletes, Olympic Medalists | |
| Omar Khayyám | m | Notable Philosophers and Thinkers, Notable Writers | |
| Ala ud-Din Khilji | m | Indian Sultans and Emperors | |
| Jalal ud-Din Firuz Khilji | m | Indian Sultans and Emperors | |
| Pavlo Khnykin | 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 | |
| Khosrau the Usurper | m | Persian and Iranian Kings and Queens | |
| Ivanka Khristova | f | Olympic Medalists | |
| Vyacheslav Khrynin | m | Olympic Medalists | |
| Volha Khudzenka | f | Olympic Medalists | |
| Alan Khugayev | m | Olympic Medalists | |
| Ukhnaagiin Khürelsükh | m | Other Leaders | |
| Khutughtu Khan | m | Chinese Emperors, Other Royalty | |
| Dmitry Khvostov | m | Notable Athletes, Olympic Medalists | |
| Mwai Kibaki | m | Other Leaders | |
| Bert Kibbler | m | Fictional Characters from Television | |
| Dragan Kićanović | m | Olympic Medalists | |
| Jason Kidd | m | Hall-of-Famers, Notable Athletes, Olympic Medalists | |
| William Kidd | m | Notable Evildoers | |
| Beatrix Kiddo | f | Fictional Characters from Movies | |
| Nicole Kidman | f | Notable Actors and Entertainers, Oscar Award Winners | |
| Markis Kido | m | Olympic Medalists | |
| Anthony Kiedis | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Urszula Kielan | f | Olympic Medalists | |
| Kerstin Kielgass | f | Olympic Medalists | |
| Alfred Kienzle | m | Olympic Medalists | |
| Søren Kierkegaard | m | Notable Philosophers and Thinkers | |
| Kurt Georg Kiesinger | m | German Chancellors and Presidents | |
| Theresia Kiesl | f | Olympic Medalists | |
| Walt Kiesling | m | Hall-of-Famers | |
| Jack Kilby | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Richard Kiley | m | Emmy Award Winners, Notable Actors and Entertainers | |
| Kilian | m | Saints | |
| Harmon Killebrew | m | Hall-of-Famers, Most Valuable Players, Notable Athletes | |
| Molly Killingbeck | f | Olympic Medalists | |
| Andrew Kim Taegon | m | Saints | |
| Kim Dae-jung | m | Nobel Prize Winners, Other Leaders | |
| Kim Dong-moon | m | Olympic Medalists | |