Greg Sill was an American music supervisor for film and television.

The son of music publisher and label executive Lester Sill, he began his career as a music coordinator at Columbia Pictures in 1976. He went on to serve as director of music at American International Pictures, director of TV/film music at CBS Songs and at publisher Warner/Chappell. He was also vice president of music at Warner Bros. Television.

Sill began his music supervision career with the nighttime soap Falcon Crest in 1990. His subsequent work included credits on the series Knots Landing, Dallas, Perfect Strangers, The George Carlin Show, Full House, The Drew Carey Show, Friends, ER, and Hangin’ With Mr. Cooper.

Most recently, Sill served as music supervisor for five seasons (2010-14) of the FX crime series Justified.

Sill died March 17, 2018, in Sherman Oaks, California. He was 63.