Matt Greenfield is the American co-founder of the now defunct ADV Films. Originally an avid fan who ran an anime club in Houston, Texas with John Ledford (known as "Anime NASA"), he and Ledford founded ADV Films in 1992. ADV Films began as an importer of anime, marketing primarily to the existing network of anime fans. He currently serves as the vice president of the company, and executive producer of many of the company's release. He is married to ADV contractor and voice actress Tiffany Grant.
In the English-language dubs of the company's licensed releases, he serves as an ADR director and occasionally takes on background roles as a voice actor, going by the pseudonym Brian Granveldt.