John T. Kretchmer is an American film and television director.

Throughout his career he has amassed a number of television credits namely Buffy the Vampire Slayer, Angel, Charmed, The Twilight Zone, Hercules: The Legendary Journeys, Special Unit 2 (also a producer), Dark Angel, Psych, Burn Notice, Veronica Mars, Star Trek: Deep Space Nine, Star Trek: Voyager, Moonlight and other series.

Prior to a career in television, Kretchmer worked as a assistant director on number of films such as The In-Laws (1979), Baby Boom (1987), The Naked Gun: From the Files of Police Squad! (1988).

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