Samuel Henry John Worthington (born August 2, 1976) is an Australian actor and writer. He portrayed Jake Sully in the 2009 film Avatar, Marcus Wright in Terminator Salvation, and Perseus in Clash of the Titans as well as its sequel Wrath of the Titans. He then transitioned to more dramatic roles, appearing in Everest (2015), Hacksaw Ridge (2016), The Shack, and Manhunt: Unabomber (both 2017). He also voiced the protagonist, Captain Alex Mason, in the video games Call of Duty: Black Ops (2010) and Call of Duty: Black Ops II (2012).
In 2004, Worthington received Australia's highest film award for his lead role in Somersault.