Mark Leo O'Brien (born 20 November 1992) is an Irish former professional footballer who played as a defender. He played in the English Football League...

O'Brien (footballer, born 1984), Irish footballer, plays for Shelbourne F.C. Mark O'Brien (footballer, born 1992), Irish footballer Mark O'Brien (poet)...

world championships (1991, 1993, 1995), and set the world record in 1992. O'Brien was born in Portland, Oregon in 1966. He is of African American and Finnish...

Kenneth John O'Brien Jr. (born November 27, 1960) is an American former professional football player who was a quarterback in the National Football League (NFL)...

Jonathan Mark O'Brien (born 2 November 1961) is an English former footballer who played as a goalkeeper. In 1984, O'Brien signed for hometown club Southend...

Robert David O'Brien (June 22, 1917 – November 18, 1977) was an American football quarterback who played in the National Football League (NFL) with the...

Irish footballer Mark O'Meara (born 1957), American professional golfer Mark Otten (born 1985), Dutch footballer Mark Paré, Canadian NHL official Mark Payton...

Fran O'Brien (born 7 April 1955) is an Irish footballer who played during the 1970s and 1980s. He was the first player to be capped for the Republic of...

Black (born 25 December 1992) is an Australian rules footballer currently playing for the West Perth Football Club in the West Australian Football League...

Reilly O'Brien (born 20 August 1995) is an Australian rules footballer playing for the Adelaide Football Club in the Australian Football League (AFL)...