April 20th
* 571 – Muhammad, (traditional date) Prophet and founder of Islam (d. 632)
* 702 – Jafar Sadiq, Shi'a Imam and Muslim scholar (d. 765)
* 1494 – Johannes Agricola, German Protestant reformer (d. 1566)
* 1586 – Saint Rose of Lima, Peruvian saint (d. 1617)
* 1633 – Emperor Go-Komyo of Japan (d. 1654)
* 1646 – Charles Plumier, French botanist (d. 1704)
* 1650 – William Bedloe, English informer (d. 1680)
* 1668 – Yuri Troubetzkoy, Governor of Belgorod (d. 1739)
* 1718 – David Brainerd, American missionary (d. 1747)
* 1723 – Cornelius Harnett, American Continental Congress delegate (d. 1781)
* 1727 – Comte de Mercy-Argenteau, Belgian-born Austrian diplomat (d. 1794)
* 1745 – Philippe Pinel, French physician (d. 1826)
* 1808 – Napoleon III of France, Emperor of the French (d. 1873)
* 1818 – Heinrich Göbel, German-born inventor (d. 1893)
* 1826 – Dinah Craik, English author (d. 1887)
* 1850 – Daniel Chester French, American sculptor (d. 1931)
* 1851 – Young Tom Morris, Scottish golfer (d. 1875)
* 1870 – Maulvi Abdul Haq, Pakistani scholar (d. 1961)
* 1871 – Sydney Chapman, British economist and civil servant (d. 1951)
* 1879 – Paul Poiret, French couturier (d. 1944)
* 1882 – Holland Smith, U.S. General (d. 1967)
* 1884 – Princess Beatrice of Edinburgh and Saxe-Coburg and Gotha (d. 1966)
* 1889 – Albert Jean Amateau, Turkish-born businessman and activist (d. 1996)
* 1889 – Adolf Hitler, German Nazi dictator (d. 1945)
* 1890 – Maurice Duplessis, premier of Quebec (d. 1959)
* 1893 – Harold Lloyd, American actor (d. 1971)
* 1893 – Edna Parker, American supercentenarian (d. 2008)
* 1893 – Joan Miró, Spanish painter (d. 1983)
* 1895 – Emile Christian, American musician (d. 1973)
* 1896 – Wop May, Canadian aviator (d. 1952)
* 1896 – Henry de Montherlant, French writer (d. 1972)
* 1904 – Bruce Cabot, American actor (d. 1972)
* 1904 – George Stibitz, American scientist (d. 1995)
* 1907 – Francois "Papa Doc" Duvalier, Haitian president (d. 1971)
* 1908 – Lionel Hampton, American musician (d. 2002)
* 1914 – Betty Lou Gerson, American actress (d. 1999)
* 1915 – Joseph Wolpe, South African–born psychotherapist (d. 1997)
* 1918 – Edward L. Beach, Jr., American naval officer, author (d. 2002)
* 1918 – Kai Siegbahn, Swedish physicist, Nobel Prize laureate (d. 2007)
* 1919 – Richard Hillary, Australian pilot and author (d. 1943)
* 1920 – John Paul Stevens, American jurist
* 1920 – Ronald Speirs, WWII Veteran (d. 2007)
* 1921 – Janine Sutto, French-Canadian actress
* 1923 – Mother Angelica, American nun and broadcaster
* 1923 – Tito Puente, American musician (d. 2000)
* 1924 – Leslie Phillips, English actor
* 1924 – Nina Foch, Dutch-born American actress (d. 2008)
* 1925 – Ernie Stautner, German-born American football player (d. 2006)
* 1927 – Phil Hill, American race car driver (d. 2008)
* 1927 – Karl Alexander Müller, Swiss physicist, Nobel Prize laureate
* 1928 – Johnny Gavin, Irish footballer (d. 2007)
* 1928 – Gerald S. Hawkins, English astronomer (d. 2003)
* 1931 – John Eccles, 2nd Viscount Eccles, British businessman and peer
* 1936 – Pat Roberts, American politician
* 1937 – Antonios Kounadis, Greek discus thrower
* 1937 – George Takei, American actor
* 1939 – Peter S. Beagle, American author
* 1939 – Gro Harlem Brundtland, former Prime Minister of Norway
* 1939 – Johnny Tillotson, American singer
* 1941 – Ryan O'Neal, American actor
* 1942 – Arto Paasilinna, Finnish writer
* 1943 – John Eliot Gardiner, English conductor
* 1943 – Edie Sedgwick, American actress (d. 1971)
* 1945 – Michael Brandon, American actor
* 1945 – Steve Spurrier, American football player and coach
* 1946 – Julien Poulin, French Canadian actor
* 1946 – Gordon Smiley, American racecar driver (d. 1982)
* 1946 – Mel Winkler, American voice actor
* 1947 – Björn Skifs, Swedish singer (Blue Swede)
* 1947 – Ken Scott, English record producer and recording engineer
* 1947 – Andrew Tobias, American journalist and author
* 1947 – David Leland, British actor, director and screenwriter
* 1948 – Craig Frost, American musician (Grand Funk & Bob Seger)
* 1948 – Gregory Itzin, American actor
* 1948 – Rémy Trudel, French Canadian politician
* 1949 – Massimo D'Alema, 76th Prime Minister of Italy
* 1949 – Veronica Cartwright, American actress
* 1949 – Toller Cranston, Canadian figure skater and artist
* 1949 – Jessica Lange, American actress
* 1950 – Steve Erickson, American novelist
* 1950 – Aleksandr Lebed, Russian general and politician (d. 2002)
* 1950 – Chandra Babu Naidu, Indian politician
* 1951 – Luther Vandross, American singer (d. 2005)
* 1952 – Božidar Maljković, Serbian basketball coach
* 1953 – Sebastian Faulks, British novelist
* 1954 – Gilles Lupien, French-Canadian ice hockey player
* 1955 – Don Pettit, American Astronaut and Inventor
* 1956 – Beatrice Ask, Swedish politician
* 1957 – Geraint Wyn Davies, Welsh-born Canadian actor
* 1958 – Viacheslav Fetisov, Russian ice hockey player
* 1959 – Clint Howard, American actor
* 1961 – Don Mattingly, American baseball player
* 1961 – Konstantin Lavronenko, Russian actor
* 1961 – Barry Smolin, American radio host, writer, and musician
* 1961 – Ralph Cirella, American radio personality
* 1962 – Henry Joseph Nasiff Jr. (AKA: Hank the Angry Drunken Dwarf), American radio personality (d. 2001)
* 1963 – Maurício Gugelmin, Brazilian racing driver
* 1963 – Aubrey de Grey, British biomedical gerontologist
* 1964 – Crispin Glover, American actor
* 1964 – Andy Serkis, English actor
* 1964 – Rosalynn Sumners, American figure skater
* 1965 – Kostas Hatzidakis, Greek politician
* 1965 – Adrian Fernández, Mexican racing driver
* 1965 – April March, American musician
* 1966 – David Chalmers, Australian philosopher
* 1967 – Raymond van Barneveld, Dutch darts player
* 1967 – Mike Portnoy, American drummer (Dream Theater)
* 1967 – Lara Jill Miller, American actress
* 1968 – J. D. Roth, American game show host and television personality
* 1970 – Shemar Moore, American actor
* 1970 – Adriano Moraes, Brazilian rodeo performer
* 1971 – Tina Cousins, English singer
* 1971 – Carla Geurts, Dutch swimmer
* 1971 – Allan Houston, American basketball player
* 1972 – Carmen Electra, American actress
* 1972 – Le Huynh Đuc, Vietnamese footballer
* 1972 – Željko Joksimović, Serbian singer, songwriter and producer
* 1972 – Stephen Marley, Jamaican musician
* 1973 – Geoff Lloyd, British radio presenter
* 1976 – Shay Given, Irish footballer
* 1976 – Joey Lawrence, American actor
* 1976 – Chris Mason, Canadian ice hockey goaltender
* 1977 – Johnny "The Bull" Stamboli, professional wrestler
* 1978 – Mirei Kuroda, Japanese gravure idol
* 1979 – Quinn Weng, Taiwanese singer (Seraphim)
* 1980 – Jasmin Wagner, German singer
* 1980 – Chris Duffy, American baseball player
* 1981 – Matus Valent, male fitness model
* 1983 – Danny Granger, American basketball player
* 1983 – Terrence J, American television host
* 1983 – Joanne King, Irish/English Actress
* 1983 – Miranda Kerr, Australian supermodel
* 1984 – Tyson Griffin, American mixed martial artist
* 1985 – Greg Lutzka, American Skateboarder
* 1986 – Cameron Duncan, New Zealand director (d. 2003)
* 1987 – John Patrick Amedori, American actor
Promotion
