Maggie McOmie is an American stage and film actress, best known for co-starring with Robert Duvall in the 1971 film THX 1138. For the film, she was required to shave her head, an event that was featured in a tongue-in-cheek behind-the-scenes featurette titled Bald. McOmie was one of the few actresses to agree to cut her hair for the role of THX's lover, LUH.
McOmie chose not to pursue a film career following THX 1138, which remains her only major film credit, although she returned to the screen in small roles in the 2006 films Grand Junction and The Boston Strangler. She performed the role of Halie in a stage production of Sam Shepard's Buried Child at Third Eye Theatre in Portland, Oregon from March 16 to April 14, 2007.