K-Def (full name Kevin Hansford) is an American, New Jersey based, hip hop producer/DJ who has been actively involved in the music industry since the early 1990s. He has recently produced music for artists such as Ghostface Killah and Puff Daddy. K-Def earned critical praise early in his career for his work with Marley Marl on the album Here Come the Lords by the rap group, Lords of the Underground.