Brian Koppelman is an American television and film writer, producer, and director. He currently serves as Showrunner and Executive Producer of Billions at Showtime Networks Inc.

Koppelman's work in film includes co-writing Ocean's. His career history also spans the music industry, where he held roles such as executive vp at Fire Farm Lighting And Fire Farm By El Sol, Exec VP at EMI Music, and worked at Elektra Records.