James Duncan Rolfe (born July 10, 1980) is an American filmmaker, YouTuber, and Internet personality. He is best known for creating and starring in the webshow Angry Video Game Nerd, a joint production of Rolfe's Cinemassacre Productions, GameTrailers, and ScrewAttack on the online video platform YouTube. His other projects include reviews of board games, classic horror films, and weekly Monday videos.

Rolfe began creating homemade video productions in the late 1980s and has created more than 270 films, including shorts, features and webisodes during his career. His career as an internet celebrity took off in 2004 with the beginning of the Angry Video Game Nerd. Two years later, Rolfe gained mainstream attention when one of his videos went viral after friend and collaborator Mike Matei persuaded him to publish them on the internet. Between this time, he filmed videos he created on his own and most of them have been released on his website, Cinemassacre.