Names beginning with O

• Obafemi AwolowoHistorical figure
• Octavia ButlerAmerican science fiction writer (1947-2006)

  June 22, 1947 – February 24, 2006
• Octavio PazMexican writer, poet an diplomat (1914–1998)

  March 31, 1914 – April 19, 1998
• Oda NobunagaJapanese samurai and warlord (1534–1582)

  June 23, 1534 – June 21, 1582
• OdaenathusKing of Palmyra from 260 to 267

  c. 220 CE – 267 CE
• Odo of BayeuxHistorical figure
• Odoacer5th-century Germanic soldier and monarch of Italy (476–493)

  433 CE – March 15, 493 CE
• Offa of MerciaKing of Mercia

  c. 800 CE – July 29, 796 CE
• Ogedei KhanKhan of the Mongol Empire (c.1186-1241) (r. 1229-1241)

  November 7, 1186 – December 11, 1241
• Olaf Carlson-WeeAmerican entrepreneur

  b. 1989
• Olaf II of NorwayHistorical figure
• Olaf ScholzGerman politician (SPD), ninth Chancellor of the Federal Republic of Germany (2021–2025), Member of the Bundestag

  being archived
• Olaf TryggvasonKing of Norway

  960 CE – September 9, 1000
• Olaoluwa OsuntokunLightning Network developer
• Olaudah EquianoBlack British abolitionist and writer (c. 1745 – 1797)

  1745 – March 31, 1797
• Olav V of NorwayKing of Norway (1957–1991)

  being archived
• Ole Kirk ChristiansenDanish businessman (1891-1958)

  being archived
• Oleg of NovgorodPrince of Novgorod-Seversk

  1137 – January 18, 1180
• Oleksandr TurchynovUkrainian politician, screenwriter, and Doctor of Economic Sciences

  being archived
• Oleksandr UsykUkrainian boxer

  being archived
• Olexii Honcharuk17th Prime Minister of Ukraine (2019-2020)

  being archived
• Olga of KievPrincess of Kiev, Orthodox saint (c. 890–925)

  890 CE – July 11, 969 CE
• Oliver CromwellEnglish military and political leader (1599–1658)

  April 25, 1599 – September 3, 1658
• Oliver HardyAmerican comic actor famous as one half of Laurel and Hardy (1892–1957)

  January 18, 1892 – August 7, 1957
• Oliver SacksBritish neurologist and writer (1933–2015)

  July 9, 1933 – August 30, 2015
• Oliver SpasovskiPolitician from North Macedonia

  being archived
• Olivia ColmanBritish actress

  being archived
• Olivia Newton-JohnBritish–Australian singer (1948–2022)

  being archived
• Olivia RodrigoAmerican singer and actress (born 2003)

  being archived
• Olivier Mahafaly SolonandrasanaMalagasy politician

  b. June 21, 1964
• Olof PalmeSwedish Prime Minister (1969–76, 1982–86)

  January 30, 1927 – February 28, 1986
• Olusegun ObasanjoNigerian president (1999-2007) and military leader (1976–79)

  being archived
• Om PuriIndian actor (1949–2017)

  October 18, 1949 – January 6, 2017
• Omar Abdirashid Ali SharmarkeSomali Diplomat

  being archived
• Omar Ali Saifuddien III of BruneiSultan of Brunei (1914-1986)

  September 23, 1914 – September 7, 1986
• Omar BongoGabonese politician (1935–2009)

  December 30, 1935 – June 8, 2009
• Omar KhayyamPersian mathematician and poet (1048–1131)

  May 18, 1048 – December 4, 1131
• Omar MukhtarLeader of the Senussi resistance against the Italian fascist occupation (1858–1931)

  August 20, 1858 – September 16, 1931
• Omar RazzazJordanian politician

  b. May 17, 1961
• Omar SharifEgyptian actor (1932–2015)

  April 10, 1932 – July 10, 2015
• Omar al-BashirPresident of Sudan from 1989 to 2019

  being archived
• Omar al-HasiLibyan politician

  b. 1949
• Omotola Jalade EkeindeNigerian actress and singer

  being archived
• Onake ObavvaIndian fighter
• Ong Teng Cheong5th President of Singapore (1936–2002)

  being archived
• Onsi SawirisEgyptian businessperson

  being archived
• Oprah WinfreyAmerican talk show host, actress, producer, and author (born 1954)

  b. January 29, 1954
• Oqil OqilovTajikistani politician

  being archived
• OrigenChristian scholar, ascetic, and theologian (c. 185 – c. 253)

  185 CE – 254 CE
• Orodes IIKing of Kings, Arsaces, Great King

  c. 70 BCE – 38 BCE
• Orson WellesAmerican actor and filmmaker (1915–1985)

  May 6, 1915 – October 10, 1985
• Orville WrightCo-inventor of powered flight with his brother Wilbur
• Osborne RiviereDominican politician (1932-2017)

  February 10, 1932 – November 23, 2017
• Oscar I of SwedenKing of Sweden and Norway between 1844–1859 (1799–1859)

  being archived
• Oscar II of SwedenKing of Sweden from 1872 to 1907 and Norway from 1872 to 1905 (1829–1907)

  being archived
• Oscar IsaacGuatemalan-American actor

  being archived
• Oscar Luigi Scalfaro9th President of Italy (1918–2012)

  September 9, 1918 – January 29, 2012
• Oscar NiemeyerBrazilian architect (1907–2012)

  December 15, 1907 – December 5, 2012
• Oscar RomeroFourth archbishop of San Salvador (1917–1980)

  August 15, 1917 – March 24, 1980
• Oscar WildeIrish poet, playwright, and aesthete (1854-1900)

  October 16, 1854 – November 30, 1900
• Osei TutuDiplomat
• Oskar SchindlerGerman industrialist and Holocaust rescuer (1908–1974)

  April 28, 1908 – October 9, 1974
• Osman IFounder of the Ottoman Empire (died 1323/4)

  August 23, 1258 – August 1, 1326
• Osvaldo DorticósPresident of Cuba (1919–1983)

  April 17, 1919 – June 23, 1983
• Oswald of NorthumbriaKing of Northumbria

  604 CE – August 5, 642 CE
• Oswald von WolkensteinGerman poet, composer, and diplomat

  1377 – August 2, 1445
• Oswaldo CruzBrazilian physician and bacteriologist (1872-1917)

  August 5, 1872 – January 11, 1917
• Otis ReddingAmerican singer and songwriter (1941–1967)

  September 9, 1941 – December 10, 1967
• Otto HahnGerman chemist and physicist (1879-1968)

  March 8, 1879 – July 28, 1968
• Otto II, Holy Roman EmperorHoly Roman Emperor from 973 to 983 and King of Italy from 980 to 983

  955 CE – December 7, 983 CE
• Otto III, Holy Roman EmperorHoly Roman Emperor from 996 to 1002

  980 CE – January 24, 1002
• Otto Pérez MolinaPresident of Guatemala (2012-2015)

  b. December 1, 1950
• Otto the GreatHoly Roman Emperor from 962 to 973

  November 23, 912 CE – May 7, 973 CE
• Otto von BismarckGerman statesman and Chancellor (1815-1898)

  April 1, 1815 – July 30, 1898
• Ottokar II of BohemiaKing of Bohemia (1253-1278)

  1233 – August 26, 1278
• Ouhoumoudou MahamadouPrime Minister of Niger from 2021 to 2023

  being archived
• Ousmane DembéléFrench footballer (born 1997)

  being archived
• OvidRoman poet (43 BC – 17/18 AD)

  43 BCE – 17 CE
• Owain GlyndwrWelsh rebel and pretender (died c. 1416)

  1359 – 1416
• Owain LawgochPrince of Gwynedd and Wales

  1330 – 1378
• Owen ArthurBarbadian politician (1949-2020)

  October 17, 1949 – July 27, 2020
• OzunaPuerto Rican singer, rapper and actor (born 1992)

  being archived
• Ozzy OsbourneEnglish musician and television personality (1948–2025)

  December 3, 1948 – July 22, 2025