| Sid Tepper | American songwriter | 1918–2015 |
| Tila Tequila | American television and socia… | 1981 |
| Terence | Roman comic playwright | -185–-159 BC |
| Albert Payson Terhune | American writer | 1872–1942 |
| Studs Terkel | American author, historian an… | 1912–2008 |
| Lysa TerKeurst | | |
| Frederick Terman | American electronic engineer | 1900–1982 |
| Eugène Terre'Blanche | South African police officer,… | 1941–2010 |
| Mary Church Terrell | African Americans' rights act… | 1863–1954 |
| Taryn Terrell | American professional wrestle… | 1985 |
| Jack Terricloth | | 1970 |
| Ellen Terry | English actress | 1847–1928 |
| George R. Terry | | 1909–1979 |
| John Terry | English association football … | 1980 |
| Randall Terry | American activist | 1959 |
| Lionel Tertis | British musician | 1876–1975 |
| Tertullian | Christian theologian | 155–220 |
| Menghesteab Tesfamariam | Eritrean Catholic archbishop | 1948 |
| Nikola Tesla | Serbian American inventor | 1856–1943 |
| Hannah Teter | snowboarder | 1987 |
| Philip E. Tetlock | American political science wr… | 1954 |
| Johann Tetzel | German Dominican friar and se… | 1460–1519 |
| Josephine Tey | Scottish author, mystery writ… | 1896–1952 |
| Osamu Tezuka | Japanese cartoonist and anima… | 1928–1989 |
| Takashi Tezuka | video game designer | 1960 |
| William Makepeace Thackeray | novelist | 1811–1863 |
| Albrecht Thaer | German agronomist and an avid… | 1752–1828 |
| Victor Henry Thakur | Indian clergyman, archbishop … | 1954 |
| Irving Thalberg | American film producer | 1899–1936 |
| Thales | ancient Greek philosopher and… | -624–-547 BC |
| Ernst Thälmann | leader of the Communist Party… | 1886–1944 |
| Mahn Win Khaing Than | politician | 1952 |
| U Thant | 3rd Secretary-General of the … | 1909–1974 |
| Ashraf Ali Thanwi | Indian Muslim scholar | 1863–1943 |
| Amar Singh Thapa | Supreme Commander of the West… | 1751–1816 |
| Bhimsen Thapa | Mukhtiyar and de facto ruler … | 1775–1839 |
| Manjushree Thapa | Nepali writer | 1968 |
| Mathabar Singh Thapa | Last Mukhtiyar and First Prim… | 1798–1845 |
| Romila Thapar | Indian historian | 1931 |
| Shashi Tharoor | Indian politician, diplomat, … | 1956 |
| Twyla Tharp | American choreographer | 1941 |
| Margaret Thatcher | British stateswoman and polit… | 1925–2013 |
| Bob Thaves | cartoonist | 1924–2006 |
| Celia Thaxter | American writer | 1835–1894 |
| Ernest Thayer | American poet | 1863–1940 |
| Nancy Thayer | American novelist | 1943 |
| William Roscoe Thayer | United States author and edit… | 1859–1923 |
| W. W. Thayer | American judge | 1827–1899 |
| Jeet Thayil | Indian writer | 1959 |
| Andrews Thazhath | Archbishop of Trichur | 1951 |
| Gerd Theissen | German theologian | 1943 |
| Themistocles | Athenian statesman | -524–-459 BC |
| Dc Themmie | | |
| Dattopant Thengadi | Indian politician | 1920–2004 |
| Lewis Theobald | | |
| Theocritus | ancient greek poet | |
| Brother Theodore | German-American monologuist a… | 1906–2001 |
| Theodoret | Syrian bishop | 393–458 |
| Symeon the New Theologian | Christian saint, monk, and th… | 949–1022 |
| Theophrastus | ancient greek philosopher | -371–-287 BC |
| Calvin Thomas (critical theorist) | American academic | 1956 |
| Stuart Hall (cultural theorist) | | 1932–2014 |
| K. Sri Dhammananda Maha Thera | Sri Lankan Buddhist monk | 1919–2006 |
| Narada Maha Thera | Sri Lankan monk and missionary | 1898–1983 |
| Nyanaponika Thera | German Buddhist monk | 1901–1994 |
| Léon Theremin | Russian inventor | 1896–1993 |
| André Thérive | French writer | 1891–1967 |
| Charlize Theron | film actress and producer, fo… | 1975 |
| Paul Theroux | American travel writer and no… | 1941 |
| Wilfred Thesiger | British explorer | 1910–2003 |
| Jan Theuninck | painter, poet | 1954 |
| John Thibaut | American social psychologist | 1917–1986 |
| Peter Thiel | American entrepreneur, ventur… | 1967 |
| Madeleine Thien | Canadian writer | 1974 |
| Nguyễn Gia Thiều | Vietnamese poet | 1741–1798 |
| Nguyễn Văn Thiệu | president of South Vietnam fr… | 1923–2001 |
| Ngũgĩ wa Thiong'o | Kenyan writer | 1938 |
| Thiruvalluvar | Tamil poet and philosopher | |
| Kent Thiry | Business; CEO of DaVita | 1956 |
| Werner Thissen | Catholic archbishop | 1938 |
| Friedrich Tholuck | German theologian | 1799–1877 |
| Kai Cheng Thom | writer | 1991 |
| Angie Thomas | American author | 1988 |
| Brandon Thomas | | |
| Clarence Thomas | Associate Justice of the Supr… | 1948 |
| Dylan Thomas | Welsh poet and writer | 1914–1953 |
| Edward Thomas | Poet and journalist | 1878–1917 |
| Evan Thomas | American journalist | 1951 |
| Frederick William Thomas | | |
| George Henry Thomas | United States Army general | 1816–1870 |
| Helen Thomas | American author and journalist | 1920–2013 |
| Jodi Thomas | American writer | 1950 |
| Lewis Thomas | American physician, poet and … | 1913–1993 |
| Marlo Thomas | American actress, producer, a… | 1937 |
| Michel Thomas | American linguist and languag… | 1914–2005 |
| Norman Thomas | American Presbyterian ministe… | 1884–1968 |
| Piri Thomas | Puerto Rican poet | 1928–2011 |
| Rob Thomas | American singer | 1972 |
| Ross Thomas | 1926-1995 American writer | 1926–1995 |
| R.S. Thomas | Welsh poet | 1913–2000 |
