Marta Dusseldorp is an Australian stage, film and theatre actress. Her television credits include BlackJack, Crownies (and its spin-off Janet King), Jack Irish and A Place to Call Home.
Dusseldorp is the granddaughter of Dutch-born engineer Dick Dusseldorp, the founder of Lend Lease Corporation. Her maternal grandfather was Sandy Robertson, a Sydney paediatrician. She attended Geelong Grammar School, graduating in 1990, and the University of New South Wales, where she majored in theatre and film for two years. She then went on to study at the Victorian College of the Arts in Melbourne.
Dusseldorp played the character of Janet King in the 2011 ABC1 drama series Crownies, a role she reprised in the 2014 spin-off Janet King.
Dusseldorp is married to fellow actor Ben Winspear, and they have two children.