Dan Shea, Daniel J. Shea (born December 23, 1954) is a Canadian actor and stunt coordinator who is best known for his recurring role as Sgt. Siler on Stargate SG-1 and Stargate Atlantis.

He is a father to actresses Joey Shea and Stephanie Shea

Shea was born in Ontario. He was the stunt coordinator and Richard Dean Anderson's stunt double on the same series - Stargate SG-1. He previously served as Anderson's stand-in on MacGyver. He has appeared in episodes of three different series with Richard Dean Anderson: MacGyver, Stargate SG-1 and Stargate Atlantis. In Season 1, Episode 18 of Stargate SG-1; "Tin Man" he appeared as Colonel Jack O'Neill's (Richard Dean Anderson) 'clone'.

He has been credited in all 214 episodes of Stargate SG-1 as either an actor, stunt double or stunt coordinator.

Dan was the stunt coordinator on the movie X-Men: The Last Stand and the show Psych.

He appeared in a memorable role as the zombified Father Buckner in the acclaimed 2012 horror film The Cabin in the Woods. He was a College Hockey player but suffered an eye injury which ended his sports career.