David Trainer is an American television director. He is perhaps best known for directing every episode of the Fox sitcom That '70s Show except the pilot "That '70s Pilot" (which was directed by Terry Hughes). He also directed the first two seasons of the television show Boy Meets World (also a supervising producer) and over 60 episodes of Designing Women. Among many others, his directing credits also include several episodes of Sabrina, the Teenage Witch, Grace Under Fire, Cybill, Anything But Love, My Boys, Hot in Cleveland and Mike & Molly.
He also wrote episodes for the soap opera Ryan's Hope in 1977 and the sitcom Misery Loves Company which he co-created with Michael Jacobs and Bob Young in 1995.