Given name
* Aldona of Lithuania (c. 1309–1339), baptized ''Ona'', Lithuanian princess and Polish queen consort * Ona Baliukonė (1948–2007), Lithuanian poet and painter * Ona Batlle (born 1999), Spanish football player * Ona Carbonell (born 1990), Spanish synchronized swimmer * Ona Danutė Buivydaitė (born 1947), Lithuanian artist and designer * Ona Dodd (1886–1956), American baseball player * Ona Dokalskaitė-Paškevičienė (1912–2007), Lithuanian-American painter * Ona Galdikaitė (1898–1990), Lithuanian poet, nun and dissident * Ona Grauer (born 1975), Mexican-Canadian actress * Ona Huczkowski (born 2002), Finnish actress * Ona Judge Staines (1773–1848), American fugitive slave * Ona Juknevičienė (born 1955), Lithuanian politician * Ona Kreivytė-Naruševičienė (born 1935), Lithuanian ceramic artist * Ona Mašiotienė, (1883–1949), Lithuanian writer, activist and educator * Ona F. Meens (1886–1980), American educator * Ona Meseguer (born 1988), Spanish water polo player * Ona Munson (1903–1955), American actress in ''Gone with the Wind'' *Surname
* Bryan Oña (born 1993), Ecuadorian football player * Carl Ona-Embo (born 1989), French-Congolese basketball player * Cynthia Ona Innis (born 1969), American artist * Daniel Ona Ondo (born 1945), Gabonese politician * Domingo de Oña (1560–1626), Spanish bishop * Enrique Ona (born 1939), Filipino doctor and politician * Francis Ona (c. 1953–2005), Papua New Guinea, Bougainville secessionist * Íñigo of Oña (died 1057), Spanish priest * Jorge Oña (born 1996), Cuban baseball player * Marc Ona, Gabonese environmentalist * Pedro de Oña (1570–1643), Chilean poet * Kim On-a (born 1988), South Korean handball player {{Given name, type=both