•
Andrew P. O'Meara (1907–2005), United States Army general •
Barry Edward O'Meara (1786–1836), Irish surgeon •
Basil O'Meara (1892–1971), Canadian sports journalist •
Brian O'Meara (rugby union) (born 1976), Irish rugby union footballer •
Brian O'Meara (Kilruane MacDonagh's hurler) (born 1990), Irish hurler •
Brian O'Meara (Mullinahone hurler) (born 1973), Irish hurler for the Tipperary senior team •
Colin O'Meara (born 1963), voice actor •
David O'Meara, Canadian poet •
Dermod O'Meara, Irish physician, poet and parent of Edmund O'Meara •
Edmund O'Meara (1614–1681), Irish physiologist and child of Dermod O'Meara •
Edward O'Meara (1921–1992), American prelate of the Roman Catholic Church •
Eileen O'Meara, American artist •
Eleanor O'Meara (died 2000), Canadian figure skater •
Frank O'Meara (1853–1888), Irish artist •
Frank O'Meara, Irish songwriter •
Ger O'Meara (born 1985), hurler and Gaelic footballer •
Jaeger O'Meara (born 1994), professional Australian rules footballer •
James O'Meara (1919–1974), Royal Air Force officer and fighter pilot •
Jane O'Meara Sanders (born 1950), American social worker, college administrator and political staffer • Paki O'Meara (born 1988), Samoan-American former football player for the University of Iowa Hawkeyes •
Jo O'Meara (born 1979), English singer-songwriter, television personality and actress •
John Corbett O'Meara (born 1933), United States federal judge •
John O'Meara (politician) (1856–1904), Liberal Party Member of Parliament in New Zealand •
John J. O'Meara (1915–2003), Irish classical scholar and historian of ancient and medieval philosophy •
Kathleen O'Meara (politician) (born 1960), Irish politician •
Kathleen O'Meara (writer) (1839–1888), Irish-French Catholic writer •
Mark O'Meara (born 1957), American professional golfer •
Martin O'Meara (1885–1935), Irish-born Australian recipient of the Victoria Cross •
Mike O'Meara (born 1959), podcast personality •
O. Timothy O'Meara (1928–2018), American mathematician •
Patrick O'Meara (born 1947), Master of Van Mildert College and Professor at Durham University •
Patrick O. O'Meara (1938–2021), author and professor •
Peter O'Meara (born 1969), Irish actor •
Peter O'Meara (rugby union), CEO of the Western Force rugby union team •
Richard O'Meara, United States Brigadier General •
Ryan O'Meara (figure skater) (born 1984), American ice dancer •
Seán O'Meara (songwriter), Irish songwriter •
Seán O'Meara (Offaly hurler) (fl. 1980–1981), Irish hurler •
Seán O'Meara (Tipperary hurler) (1951–2010), Irish hurler •
Shane O'Meara (born 1992), Irish actor •
Walter O'Meara (1897–1989), American author ==Meara==