Mark O'Brien may refer to:
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Mark O'Brien (actor)
Mark O'Brien (born May 7, 1984) is a Canadian actor and director best known for his roles as Des Courtney in ''Republic of Doyle'' and Tom Rendon in '' Halt and Catch Fire''. He won the Canadian Screen Award for Best Actor at the 8th Canadian Sc ...
(born 1984), Canadian actor
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Mark O'Brien (cyclist)
Mark O'Brien (born 16 September 1987 in Horsham) is an Australian cyclist, who last rode for Australian amateur team InForm TM Insight MAKE. He won the 2024 Melbourne to Warrnambool Cycling Classic.
Major results
;2008
: 3rd Road race, Nati ...
(born 1987), Australian cyclist
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Mark O'Brien (footballer, born 1984)
Mark O'Brien (born 13 May 1984 in Dublin, Ireland), is an Irish footballer who plays for Dundalk in the League of Ireland Premier Division.
O'Brien is a central midfielder and comes from a footballing background as his father Derek played for ...
, Irish footballer, plays for Shelbourne F.C.
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Mark O'Brien (footballer, born 1992)
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 for Derby County, Luton Town and Newport County and in the Scottish Premiership for Motherwe ...
, Irish footballer
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Mark O'Brien (poet)
Mark O'Brien (July 31, 1949 – July 4, 1999) was an American journalist, poet, and advocate for the disabled. He has been the subject of two films: '' Breathing Lessons: The Life and Work of Mark O'Brien'', which won an Academy Award in 19 ...
(1949–1999), American poet and advocate for the disabled
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Mark O'Brien (hurler), Irish hurler
{{hndis, Obrien, Mark