Mark O'Halloran may refer to:
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Mark O'Halloran (rugby league) (born 1981), Australian rugby league footballer
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Mark O'Halloran (writer)
Mark O'Halloran ( ga, Marcas Ó hAllmhuráin) is an Irish scriptwriter and actor. He is a native of Ennis, County Clare. He has written award-winning screenplays for the films '' Adam & Paul'' (in which he co-starred) and '' Garage'' and the RT ...
, Irish scriptwriter and actor
{{hndis, Ohalloran, Mark