<Tr> <Th> Spouse (s) </Th> <Td> Malia Jones (m . 2014) </Td> </Tr> <Tr> <Th> Children </Th> <Td> </Td> </Tr> <P> Alex O'Loughlin / oʊ ˈlɒklɪn / (born 24 August 1976) is an Australian actor, writer and director, who plays Lieutenant Commander Steve McGarrett on CBS' remake of the TV series Hawaii Five - 0 . He had starring roles in the films Oyster Farmer (2004) and The Back - up Plan (2010), as well as on such television series as Moonlight (2008) and Three Rivers (2009). </P> <P> O'Loughlin was born on 24 August 1976, in Canberra, Australia, of Irish and Scottish descent . His father is a physics and astronomy teacher in Sydney and his mother is a nurse . </P>

Who is the actor that plays steve mcgarrett