Martin Colin Sacks (born 16 October 1959) is an award-winning Australian actor, chiefly known for his 12-year role on Blue Heelers from 1993–2005.
Sacks was born in Sydney. He first got into acting after a bit part in an episode of The Love Boat when it was filming in the Pacific. His first role came about in the series The Restless Years in the late 1970s, which started him on the television circuit in Australia. He emigrated to Hollywood in the 1980s, guest starring in series such as thirtysomething, but preferred Australia, and so he returned there after a few years. Also had guest appearances in: Love in Limbo, Encounters, Irresistible Force, Fields of Fire III, All the Way, Touch the Sun: Princess Kate, Slate, Wyn & Me, Tricheuse, La, Emoh Ruo, Stock Squad and The City's Edge.
Against his first instinct, Sacks took the role of Detective P.J. Hasham in the 1993 series Blue Heelers. The show rocketed him to fame, most notably his 7-year "will-they-or-won't-they" relationship with Constable Maggie Doyle (Lisa McCune) which ended with her death in the programme's seventh season.