Sullivan Stapleton (born 14 June 1977) is an Australian actor who is best known for his roles in the SKY (BSkyB)/Cinemax/HBO television series Strike Back and the 2010 Sundance Film Festival selection Animal Kingdom.
Stapleton was born in Melbourne, Victoria. His sister is actress Jacinta Stapleton. In 2012, it was reported that Stapleton had been cast in the lead role in the film 300: Rise of an Empire, as the Greek leader Themistocles. The Warner Bros. film is set to release on 7 March 2014.
In August 2013, Australians in Film announced that Stapleton will be honored on October 24, 2013 with a Breakthrough Award at an exclusive Benefit Dinner held in Los Angeles.