Armand Douglas "Armie" Hammer (born August 28, 1986) is an American actor who is known for his roles as Billy Graham in Billy: The Early Years, the Winklevoss twins in The Social Network, Clyde Tolson in J. Edgar, and Prince Andrew Alcott in Mirror Mirror.

He played John Reid in the 2013 Disney action-western film, The Lone Ranger, a role he later reprised in the video game Disney INFINITY. He voiced Jackson Storm in Cars 3.