Steve Marcus (September 18, 1939 in New York's Bronx – September 25, 2005 in New Hope, Pennsylvania) was an American jazz saxophonist.
His first album as a leader included an arrangement of the Beatles' song "Tomorrow Never Knows". He worked with jazz drummer Buddy Rich for the last twelve years of Rich's life. After Rich died, Marcus led the band and renamed it Buddy's Buddies.