Ishmael Wadada Leo Smith (born December 18, 1941) is an American trumpeter and composer, working primarily in the field of creative music. He was one of three finalists for the 2013 Pulitzer Prize for Music for Ten Freedom Summers, released on May 22, 2012.

Smith was born in Leland, Mississippi, United States. He started out playing drums, mellophone, and French horn before he settled on the trumpet. He played in various R&B groups and, by 1967, became a member of the AACM and co-founded the Creative Construction Company, a trio with Leroy Jenkins and Anthony Braxton. In 1971, Smith formed his own label, Kabell. He also formed another band, the New Dalta Ahkri, with members including Henry Threadgill, Anthony Davisand Oliver Lake.