Sam Witwer is an actor and a musician.

He started his acting career making appearances on television shows, such as ER, JAG, Arliss, Dark Angel, Star Trek:Enterprise, Cold Case, NCIS, Dexter, Bones, Shark, and CSI: Crime Scene Investigation. He also had recurring roles on Battlestar Galactica and Smallville, and is currently a series regular on Syfy's Being Human.