Lexa Doig dated actor Michael Shanks after they met on the set of Andromeda, where the former starred and the latter guest-starred in the 2001 episode "Star Crossed." They married on August 2, 2003, and they worked together again in the 2003 episode "Day of Judgment, Day of Wrath" of the same TV series. The couple were castmates in the final two seasons of Stargate SG-1. They worked together in the action thriller Tactical Force (2011), in which Doig portrayed an LAPD SWAT officer and Shanks played the role of a Russian mob leader. They have two children, a son and a daughter, in addition to Shanks' child from a previous relationship.