Gerald Joseph "Gerry" Mulligan (April 6, 1927 – January 20, 1996) was an American jazz saxophonist, composer and arranger.
Though Mulligan is primarily known as one of the leading baritone saxophonists in jazz history - playing the instrument with a light and airy tone in the era of cool jazz - he was also a notable arranger, working with Claude Thornhill, Miles Davis, Stan Kenton, and others. Mulligan's pianoless quartet of the early 1950s with trumpeter Chet Baker is still regarded as one of the more important cool jazz groups. Mulligan was also a skilled pianist and played several other reed instruments.
Gerry Mulligan was born in Queens Village, Queens, New York, the son of George and Louise Mulligan. George Mulligan was a Wilmington, Delaware native of Irish descent. Louise Mulligan was a Philadelphia native of half Irish and half German descent. Gerry was the last of four sons: George, Phil, Don and Gerry.