Dennis Regan is a stand-up comedian from Florida who regularly tours with his brother Brian Regan. He started doing sets in clubs in 1987. In 1989 he became one of the hosts on the Comedy Central show Short Attention Span Theater along with his brother Brian. He also does voice-overs for cartoons and video games and wrote one episode of The King of Queens. Today he lives in New York.

Brother of comedian Brian Regan (III).

Started doing stand-up comedy in 1987. He usually tours with his brother Brian Regan (III).

Is the third of eight children.