| Antonio Sabàto Jr. | American actor and model | 1972 |
| Arthur M. Schlesinger, Jr. | American historian, social cr… | 1917–2007 |
| Basil Manly Jr. | American minister and theolog… | 1825–1892 |
| Benjamin Franklin King, Jr. | American humorist and poet | 1857–1894 |
| Benjamin J. Davis Jr. | American politician | 1903–1964 |
| Bruce Palmer Jr. | United States Army Chief of S… | 1913–2000 |
| Cal Ripken, Jr. | American baseball player | 1960 |
| Daniel James Jr. | United States general | 1920–1978 |
| David A. Clarke Jr. | | |
| Donald Trump Jr. | American businessman and son … | 1977 |
| Don West, Jr. | | |
| Edgar A. Singer, Jr. | American philosopher | 1873–1954 |
| Edward E. David Jr. | American engineer | 1925–2017 |
| Floyd Mayweather Jr. | American boxer | 1977 |
| George Howard Earle, Jr. | American lawyer | 1856–1928 |
| Harry Connick, Jr. | American singer, conductor, p… | 1967 |
| Henry Louis Gates Jr. | American professor | 1950 |
| H. Jackson Brown, Jr. | American writer | 1940 |
| Hubert Selby Jr. | American writer | 1928–2004 |
| Hugh Thompson, Jr. | United States helicopter pilo… | 1943–2006 |
| James Otis Jr. | Lawyer in colonial Massachuse… | 1725–1783 |
| John D. Rockefeller, Jr. | American financier and philan… | 1874–1960 |
| John Paton Davies, Jr. | American diplomat | 1908–1999 |
| John T. Noonan Jr. | United States federal judge | 1926–2017 |
| Joseph Smith, Jr. | American religious leader and… | 1805–1844 |
| Kingman Brewster, Jr. | American diplomat | 1919–1988 |
| Leighton W. Smith, Jr. | United States Navy admiral | 1939 |
| Lewis F. Powell, Jr. | American judge | 1907–1998 |
| Marion J. Levy Jr. | American sociologist | 1918–2002 |
| Martin Luther King, Jr. | American clergyman, activist,… | 1929–1968 |
| Michael Landon Jr. | American television director | 1964 |
| Michael Porter Jr. | American basketball player | 1998 |
| Norman Foster Ramsey, Jr. | | |
| O.B. Hardison Jr. | | 1927–1990 |
| Oliver Wendell Holmes Jr. | United States Supreme Court j… | 1841–1935 |
| Ralph P. Boas Jr. | American mathematician | 1912–1992 |
| Richard Henry Dana Jr. | United States author and lawy… | 1815–1882 |
| Richard Roth, Jr. | American architect | |
| Richard R. Wright Jr. | | 1878–1967 |
| Robert Downey Jr. | American actor | 1965 |
| Robert Francis Kennedy, Jr. | American activist | 1954 |
| Robert Lee Scott Jr. | Brigadier General in the Unit… | 1908–2006 |
| Robert Lucas Jr. | American economist | 1937 |
| Robert P. Young Jr. | | |
| Ronald J. Garan, Jr. | | |
| Roy A. Childs, Jr. | American libertarian essayist… | 1949–1992 |
| Roy Blount Jr. | American writer | 1941 |
| Ted Ginn, Jr. | American football wide receiv… | 1985 |
| Thomas E. Woods Jr. | American academic | 1972 |
| Thomas Watson, Jr. | American businessman and dipl… | 1914–1993 |
| Tom Kean, Jr. | Member of the New Jersey Gene… | 1968 |
| Vine Deloria Jr. | American writer | 1933–2005 |
| Walter M. Miller, Jr. | American fiction writer | 1923–1996 |
| William Broyles Jr. | American screenwriter | 1944 |
| William F. Buckley Jr. | American conservative author … | 1925–2008 |
| William Frederick Halsey, Jr. | United States admiral | 1882–1959 |
| William H. Pryor Jr. | American judge | 1962 |
| Will Lang, Jr. | American journalist | 1914–1968 |
| Benito Juárez | President of Mexico during XI… | 1806–1872 |
| Albert Jubithana | Surinamese government minister | |
| Alan Judd | British writer | 1946 |
| Donald Judd | artist | 1928–1994 |
| Aaron Judge | American baseball player | 1992 |
| Jack Judge | British song-writer and music… | 1878–1938 |
| William Quan Judge | American occult writer | 1851–1896 |
| Tony Judt | British historian | 1948–2010 |
| Wang Ju-hsuan | Taiwanese politician | 1961 |
| Heidi Julavits | Novelist, editor | 1968 |
| Jean Jullien | french graphic designer, illu… | 1983 |
| Miranda July | American performance artist, … | 1974 |
| Walid Jumblatt | Leader of the Progressive Soc… | 1949 |
| Zhang Jun | Chinese ambassador | 1960 |
| Jean-Claude Juncker | Luxembourgian politician | 1954 |
| C.G. Jung | Swiss psychiatrist and psycho… | 1875–1961 |
| HoYeon Jung | South Korean model, actress | 1994 |
| Traudl Junge | secretary to Adolf Hitler | 1920–2002 |
| Sebastian Junger | American author, journalist a… | 1962 |
| Ernst Jünger | German writer | 1895–1998 |
| Cho Jung-tai | Taiwanese politician | 1959 |
| Valter Bitencourt Júnior | Brazilian poet and writer | 1994 |
| Jean-Andoche Junot | French general | 1771–1813 |
| John Lee Juo-Wang | bishop of the roman-catholic … | 1966 |
| Vytautas Juozapaitis | Lithuanian opera singer | 1963 |
| Joseph M. Juran | Quality guru | 1904–2008 |
| Scott Jurek | American ultramarthon runner | 1973 |
| Norton Juster | American children's writer, a… | 1929 |
| Donald Justice | Poet, teacher | 1925–2004 |
| John Holt (Lord Chief Justice) | English lawyer and Lord Chief… | 1642–1710 |
| Juvenal | ancient roman poet | 50 |
| Bai Juyi | Chinese poet of the Tang Dyna… | 772–846 |
| Lee Jye | Taiwanese military personnel | 1940 |
| Niranjan Jyoti | Indian politician | 1967 |
