Glen or Glenda is a 1953 American independent exploitation film directed, written by and starring Ed Wood (credited in his starring role as "Daniel Davis"), and featuring Wood's then-girlfriend Dolores Fuller and Bela Lugosi. It was produced by George Weiss who also made the exploitation film Test Tube Babies that same year.

The film is a docudrama about cross-dressing and transvestism, and is semi-autobiographical in nature. Wood himself was a cross-dresser, and the film is a plea for tolerance. It was widely considered one of the worst films ever made upon release. However, it has since been reevaluated and has become a cult film due to its low-budget production values, idiosyncratic style, and early cinematic themes of transgender acceptance.