O'Hara is an Anglicized form of the Irish name Ó hEaghra. The death of the eponym is mentioned in the Annals of the Four Masters - 926. Eaghra Poprigh mac Saorghus, lord of Luighne, in Connaught ... died.
Barratt O'Hara (1882–1969), American politician
Bernard O'Hara (born 1945), Irish historian
Catherine O'Hara (born 1954), Canadian actress
Charles O'Hara (1740–1802), British military officer
Dane O'Hara, New Zealand rugby league footballer
David O'Hara (born 1965), British actor
Edward O'Hara (born 1937), British politician
Edwin Vincent O'Hara (1881–1956), American prelate of the Roman Catholic Church
Éilis Ni Dhuibhne, Elisabeth O'Hara (born 1954), Irish novelist
Frank O'Hara (1926-1966), American poet
Gerald Patrick Aloysius O'Hara (1895—1963), American prelate of the Roman Catholic Church
Geoffrey O'Hara (1882–1967), Canadian American composer, singer and music professor
George O'Hara (actor) (1899–1966), American actor and screenwriter
Gerry O'Hara (born 1925), British film and television director
Glen O'Hara (born 1974), British academic historian
Helen O'Hara (born 1955) British musician, violinist
James G. O'Hara (1925–1989), American statesman
Jamie O'Hara (footballer) (born 1986), British football player
Jamie O'Hara (singer), (b. 1950), American country music singer-songwriter
Jean O'Hara (1913–1973), American prostitute
Joan O'Hara (1930–2007), Irish actress
John Bernard O'Hara (1862-1927), Australian poet
John Francis O'Hara (1888–1960), American catholic cardinal and educator
John Henry O'Hara (1905–1970), American writer
John Kennedy O'Hara (born 1961), American politician
Kane O'Hara (c.1711–1782), Irish composer
Kelley O'Hara (born 1988), American footballer
Kelli O'Hara (born 1977), American actress and singer
Kid O'Hara (1875–1954), American baseball player
Maggie Blue O'Hara, Canadian actress
Mario O'Hara, Filipino film director, film producer and screenwriter
Mark O'Hara, Scottish footballer
Mary O'Hara (born 1935), Irish singer and harpist
Mary Margaret O'Hara, Canadian singer-songwriter
Maureen O'Hara (1920–2015), Irish-American actress
Michael O'Hara, American volleyball player
Michael O'Hara, American writer and producer
Michael D. O'Hara (1910-1978), American jurist
Shaun O'Hara (born 1977) American football player
Paige O'Hara (born 1956) American singer and actress
Pat O'Hara (born 1968), American football player, coach
Patsy O'Hara (1957–1981), Irish Republican hunger striker
Patrick O'Hara an Irish politician
Russ O'Hara, American radio personality
Theodore O'Hara (1820–1867), American poet and Confederate colonel
Thomas J. O'Hara C.S.C., Ph.D., an American president of King's College
Tom O'Hara (born 1942), American runner
Valentine O'Hara (1875–1941), Irish author and authority on Russia
Colonel Walter O'Hara (1789–1874), British army officer
