Namesakes Born on the 15th of the Month
| Name | Categories | |
|---|
| John Stephens | Olympic Medalists |  |
| Ian Stewart | Olympic Medalists | |
| Lewis Stone | Notable Actors and Entertainers | |
| Oliver Stone | Notable Filmmakers, Oscar Award Winners | |
| Sly Stone | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Süleyman II | Islamic Caliphs, Ottoman Sultans | |
| Linn Jørum Sulland | Notable Athletes, Olympic Medalists | |
| Irina Sumnikova | Olympic Medalists | |
| Sun Ye | Olympic Medalists | |
| Toni Šunjić | Notable Athletes | |
| Pehr Evind Svinhufvud | Finnish Presidents and Prime Ministers | |
| Beata Szydło | Polish Presidents and Prime Ministers | |
| Žan Tabak | Notable Athletes, Olympic Medalists | |
| Panagiotis Tachtsidis | Notable Athletes | |
| Boris Tadić | Other Leaders | |
| William Howard Taft | American Presidents | |
| Kaima Taira | Olympic Medalists | |
| Naoto Tajima | Olympic Medalists | |
| Stephanie Talbot | Olympic Medalists | |
| Tatyana Talysheva | Olympic Medalists | |
| Ott Tänak | Notable Athletes | |
| Junya Tanaka | Notable Athletes | |
| Anca Tănase | Olympic Medalists | |
| Tang Jingzhi | Olympic Medalists | |
| Revaz Tchomakhidze | Olympic Medalists | |
| Brian Tee | Notable Actors and Entertainers | |
| Edward Teller | Notable Scientists and Inventors | |
| Temür Khan | Chinese Emperors, Other Royalty | |
| Teresa Margaret of the Sacred Heart | Saints | |
| Jan Terlouw | Notable Politicians and Statespeople, Notable Writers | |
| Torin Thatcher | Notable Actors and Entertainers | |
| Adolphe Thiers | French Presidents and Prime Ministers | |
| E. Donnall Thomas | Nobel Prize Winners | |
| Emma Thompson | Notable Actors and Entertainers, Oscar Award Winners | |
| Marielle Thompson | Olympic Medalists | |
| Earl Thomson | Olympic Medalists | |
| Sindarius Thornwell | Notable Athletes | |
| Lawrence Tierney | Notable Actors and Entertainers | |
| Charles Tiffany | Notable Businesspeople | |
| Nikolaas Tinbergen | Nobel Prize Winners | |
| Yasniel Toledo | Olympic Medalists | |
| Stephen Tompkinson | Notable Actors and Entertainers | |
| Tong Jian | Olympic Medalists | |
| Veselin Topalov | Notable Athletes | |
| Mirek Topolánek | Other Leaders | |
| Ray Toro | Notable Musicians | |
| Dara Torres | Olympic Medalists | |
| Fernanda Torres | Notable Actors and Entertainers | |
| Evangelista Torricelli | Notable Scientists and Inventors | |
| Filippo Tortu | Olympic Medalists | |
| Cristopher Toselli | Notable Athletes | |
| Rustam Totrov | Olympic Medalists | |
| Ahmad Toukan | Jordanian Prime Ministers | |
| Stuart Townsend | Notable Actors and Entertainers | |
| Tomas Tranströmer | Nobel Prize Winners, Notable Writers | |
| Marius Trésor | Notable Athletes | |
| David Trimble | Nobel Prize Winners | |
| John Trudell | Notable Activists and Revolutionaries, Notable Actors and Entertainers, Notable Writers | |
| Jolin Tsai | Notable Musicians | |
| Callum Turner | Notable Actors and Entertainers | |
| Fred Tyler | Olympic Medalists | |
| Umberto II of Italy | Other Royalty | |
| Miklós Ungvári | Olympic Medalists | |
| Gene Upshaw | Hall-of-Famers | |
| Dmitry Ushakov | Olympic Medalists | |
| Fulvio Valbusa | Olympic Medalists | |
| Văn Cao | Notable Musicians | |
| Norm Van Brocklin | Hall-of-Famers | |
| Vivienne van den Assem | Notable Actors and Entertainers | |
| Willy Vandersteen | Notable Artists, Notable Writers | |
| Yannick van de Velde | Notable Actors and Entertainers | |
| Marieke van Doorn | Olympic Medalists | |
| Amy Van Dyken | Olympic Medalists | |
| Floris Adriaan van Hall | Dutch Prime Ministers | |
| Lieve van Kessel | Olympic Medalists | |
| Wayde van Niekerk | Olympic Medalists | |
| Rembrandt van Rijn | Notable Artists | |
| Koosje van Voorn | Olympic Medalists | |
| Ronnie Van Zant | Rock and Roll Hall-of-Famers | |
| Dacian Varga | Notable Athletes | |
| Ivan Vargić | Notable Athletes | |
| Luigi Variara | Saints | |
| Viktor Vasnetsov | Notable Artists | |
| Greg Vaughan | Notable Actors and Entertainers | |
| Mo Vaughn | Most Valuable Players | |
| Raimonds Vējonis | Latvian Presidents and Prime Ministers | |
| Bisera Veletanlić | Notable Musicians | |
| Joël Veltman | Notable Athletes | |
| André Ventura | Notable Politicians and Statespeople | |
| Jules Verbecke | Olympic Medalists | |
| Fernando Verdasco | Notable Athletes | |
| Shefqet Vërlaci | Albanian Presidents and Prime Ministers | |
| Zoltán Verrasztó | Olympic Medalists | |
| Vigdís Finnbogadóttir | Icelandic Presidents and Prime Ministers | |
| Frank Vincent | Notable Actors and Entertainers | |
| Jan-Michael Vincent | Notable Actors and Entertainers | |
| Artturi Ilmari Virtanen | Nobel Prize Winners, Notable Scientists and Inventors | |
| Harry Voigt | Olympic Medalists | |
| Demi Vollering | Notable Athletes | |
| Emil von Behring | Nobel Prize Winners, Notable Scientists and Inventors | |
| Hoimar von Ditfurth | Notable Writers | |
| Hans von Euler-Chelpin | Nobel Prize Winners | |
| Richard von Weizsäcker | German Chancellors and Presidents | |
| Zdeslav Vrdoljak | Olympic Medalists | |
| Shannon Vreeland | Olympic Medalists | |
| Martien Vreijsen | Notable Athletes | |
| Lenka Vymazalová | Olympic Medalists | |
| Helen Wainwright | Olympic Medalists | |
| Jenn Wakefield | Olympic Medalists | |
| Ferdinand Georg Waldmüller | Notable Artists | |
| Robert Walker Jr. | Notable Actors and Entertainers | |
| Uno Wallentin | Olympic Medalists | |
| Robert Walser | Notable Writers | |
| Kerri Walsh Jennings | Olympic Medalists | |
| Margaret Wambui | Olympic Medalists | |
| Garrett Wang | Notable Actors and Entertainers | |
| Wang Hao | Olympic Medalists | |
| Wang Xiaozhu | Olympic Medalists | |
| Mark Warnecke | Olympic Medalists | |
| Sam Waterston | Notable Actors and Entertainers | |
| Emma Watson | Notable Actors and Entertainers | |
| Patrick Wayne | Notable Actors and Entertainers | |
| Gerda Wegener | Notable Artists | |
| Mariechen Wehselau | Olympic Medalists | |
| Ezer Weizman | Israeli Presidents and Prime Ministers | |
| Thomas Huckle Weller | Nobel Prize Winners | |
| Wes | Notable Musicians | |
| Dominic West | Notable Actors and Entertainers | |
| Forest Whitaker | Notable Actors and Entertainers, Oscar Award Winners | |
| Nera White | Hall-of-Famers, Notable Athletes | |
| Randy White | Hall-of-Famers | |
| Alfred North Whitehead | Notable Philosophers and Thinkers | |
| Beverley Whitfield | Olympic Medalists | |
| Pernilla Wiberg | Notable Athletes, Olympic Medalists | |
| Frank Wiegand | Olympic Medalists | |
| Frank Wilczek | Nobel Prize Winners, Notable Scientists and Inventors | |
| Erik Wilén | Olympic Medalists | |
| Samira Wiley | Notable Actors and Entertainers | |
| Mac Wilkins | Olympic Medalists | |
| Maurice Wilkins | Nobel Prize Winners, Notable Scientists and Inventors | |
| Atom Willard | Notable Musicians | |
| Will.i.am | Notable Musicians | |
| Billy Williams | Hall-of-Famers, Notable Athletes | |
| Bryan "Birdman" Williams | Notable Musicians | |
| Christopher Williams | Olympic Medalists | |
| Maisie Williams | Notable Actors and Entertainers | |
| Sam Willoughby | Olympic Medalists | |
| Edith Wilson | American First Ladies | |
| Ellen Wilson | American First Ladies | |
| Peter Wilson | Olympic Medalists | |
| Thomas F. Wilson | Notable Actors and Entertainers | |
| Kevin Wimmer | Notable Athletes | |
| Greg Wise | Notable Actors and Entertainers | |
| P. G. Wodehouse | Notable Writers | |
| Stanisław Wojciechowski | Polish Presidents and Prime Ministers | |
| Kara Wolters | Olympic Medalists | |
| Shailene Woodley | Notable Actors and Entertainers | |
| Allen Woodring | Olympic Medalists | |
| Fay Wray | Notable Actors and Entertainers | |
| Lew Wyld | Olympic Medalists | |
| Stanisław Wyspiański | Notable Artists, Notable Writers | |
| Talat Xhaferi | Other Leaders | |
| Xi Jinping | Other Leaders | |
| Xu Dongxiang | Olympic Medalists | |
| Brigitte Yagüe | Olympic Medalists | |
| Olga Yakovleva | Olympic Medalists | |
| Toshikazu Yamanishi | Olympic Medalists | |
| Marshal Yanda | Notable Athletes | |
| Yang Jinghui | Olympic Medalists | |
| Sebastián Yatra | Notable Musicians | |
| Yekaterina I | Russian Grand Dukes and Tsars | |
| Eusebia Palomino Yenes | Saints | |
| Olga Yevkova | Olympic Medalists | |
| Miruts Yifter | Olympic Medalists | |
| Faruk Yiğit | Notable Athletes | |
| Burak Yılmaz | Notable Athletes | |
| Yonten Gyatso | Other Religious Leaders | |
| Masataka Yoshida | Olympic Medalists | |
| Robert Young | Olympic Medalists | |
| Tim Young | Olympic Medalists | |
| Chief Yowlachie | Notable Actors and Entertainers | |
| Natalia Zabolotnaya | Olympic Medalists | |
| Lubomír Zajíček | Olympic Medalists | |
| L. L. Zamenhof | Notable Philosophers and Thinkers | |
| David Zayas | Notable Actors and Entertainers | |
| Dušica Žegarac | Notable Actors and Entertainers | |
| Jonas Žemaitis | Lithuanian Presidents and Prime Ministers | |
| Paige Zemina | Olympic Medalists | |
| Boudewijn Zenden | Notable Athletes | |
| Benjamin Zephaniah | Notable Writers | |
| Zhou Chunxiu | Olympic Medalists | |
| Mihály Zichy | Notable Artists | |
| Radoslav Židek | Olympic Medalists | |
| Farit Zigangirov | Olympic Medalists | |
| Predrag Zimonjić | Olympic Medalists | |
| Oleksandr Zinchenko | Notable Athletes | |
| Jasna Zlokić | Notable Musicians | |
| Vera Zozulya | Olympic Medalists | |
| Katija Zubčić | Notable Actors and Entertainers | |
| Silvan Zurbriggen | Olympic Medalists | |
| Kristaps Zvejnieks | Notable Athletes | |