Mike Mangini (born April 18, 1963 Newton, Massachusetts) is an American drummer. He is known as the drummer of Dream Theater from 2010 to 2023, when Mike Portnoy was away from the band. He has also played for bands and artists such as Annihilator, Extreme, James LaBrie, and Steve Vai. Before joining Dream Theater, Mangini was a faculty member at Berklee College of Music. Between 2002 and 2005, he set five World's Fastest Drummer records. Mangini appeared on the Discovery Channel show Time Warp, displaying his drum skills for high speed cameras.