Steve Lacy (July 23, 1934 – June 4, 2004), born Steven Norman Lackritz in New York City, was a jazz saxophonist and composer recognized as one of the important players of soprano saxophone.

Coming to prominence in the 1950s as a progressive Dixieland musician, Lacy went on to a long and prolific career. He worked extensively in experimental jazz and dabbled in free improvisation, but Lacy's music was typically melodic and tightly-structured.