| Author | Profession | Birth date | Death date |
|---|---|---|---|
| U Thant | Statesman | January 22, 1909 | 1974 |
| U-God | Rapper | November 11, 1970 | |
| U. R. Ananthamurthy | Writer | December 21, 1932 | August 22, 2014 |
| U.G. Krishnamurti | Writer | July 9, 1918 | March 22, 2007 |
| Ubaldo Jimenez | Baseball player | January 22, 1984 | |
| Uche Okafor | Soccer player | August 8, 1967 | January 6, 2011 |
| Uday Hussein | June 18, 1964 | July 22, 2003 | |
| Uday Kiran | Indian Actor | June 26, 1980 | January 5, 2014 |
| Uday Kotak | Indian Businessman | March 15, 1959 | |
| Udi Aloni | December 10, 1959 | ||
| Udny Yule | Statistician | February 18, 1871 | June 26, 1951 |
| Udo Di Fabio | March 26, 1954 | ||
| Udo Dirkschneider | April 6, 1952 | ||
| Udo Kier | Actor | October 14, 1944 | |
| Udonis Haslem | American Athlete | June 9, 1980 | |
| Ueda Akinari | Author | July 25, 1734 | August 8, 1809 |
| Ueli Gegenschatz | Swiss Athlete | January 3, 1971 | November 13, 2009 |
| Ueli Steck | October 4, 1976 | April 30, 2017 | |
| Uell Stanley Andersen | Author | September 14, 1917 | September 24, 1986 |
| Uesugi Kenshin | Daimyo | February 18, 1530 | April 19, 1578 |
| Uffie | Musician | December 9, 1987 | |
| Ugo Betti | Italian Playwright | February 4, 1892 | June 9, 1953 |
| Ugo Cavallero | September 20, 1880 | September 13, 1943 | |
| Ugo Ehiogu | Footballer | November 3, 1972 | April 21, 2017 |
| Ugo Mochi | Author | 1889 | 1977 |
| Ugo Monye | April 13, 1983 | ||
| Ujjwal Nikam | Special prosecutor | March 30, 1953 | |
| Ulf Merbold | Astronaut | June 20, 1941 | |
| Ulisses Soares | October 2, 1958 | ||
| Uljana Semjonova | Basketball Player | March 9, 1952 | |
| Ulpian | Jurist | 170 | 228 |
| Ulpian Fulwell | Playwright | 1546 | 1584 |
| Ulric Neisser | Psychologist | December 8, 1928 | February 17, 2012 |
| Ulrich Beck | German Sociologist | May 15, 1944 | |
| Ulrich Walter | German Astronaut | February 9, 1954 | |
| Ulrike Meinhof | Journalist | October 7, 1934 | May 9, 1976 |
| Ulysses G. Weatherly | April 2, 1865 | July 18, 1940 | |
| Ulysses S. Grant | American President | April 27, 1822 | July 23, 1885 |
| Um Ki-joon | Actor | April 22, 1976 | |
| Uma Bharti | Minister of Water Resources of India | May 3, 1959 | |
| Uma Krishnaswami | Author | 1956 | |
| Uma Thurman | American Actress | April 29, 1970 | |
| Umair Haque | Author | ||
| Umar | Rashidun | 584 | November 6, 644 |
| Umar Farouk Abdulmutallab | December 22, 1986 | ||
| Umar II | November 2, 682 | February 720 | |
| Umberto Boccioni | Painter | October 19, 1882 | August 17, 1916 |
| Umberto Eco | Italian Novelist | January 5, 1932 | February 19, 2016 |
| Umberto Giordano | Opera composer | August 28, 1867 | November 12, 1948 |
| Umberto Guidoni | Italian Astronaut | August 18, 1954 |