Major Evan Lorne, USAF is a fictional character in the Canadian–American Sci-Fi Channel television series Stargate SG-1 and Stargate Atlantis, two military science fiction shows about military teams exploring the galaxy via a network of alien transportation devices. Played by Kavan Smith, Evan Lorne was introduced as a recurring character in the seventh season of Stargate SG-1, holding the military rank of Major in the United States Air Force. He joins the Atlantis expedition after "The Siege" as one of the personnel on the Daedalus class battlecruiser.
Lorne was a recurring character in seasons seven and ten in Stargate SG-1 and season two–season five in Stargate Atlantis. Smith was originally supposed to play another character in Stargate Atlantis, but the producers eventually decided to keep Lorne, since he was popular with the fans according to Smith himself. He appears in a total of 29 episodes.