Hal Leonard Corporation is a US music publishing company founded in Winona, Minnesota, by Harold "Hal" Edstrom, his brother, Everett "Leonard" Edstrom, and fellow musician Roger Busdicker. Currently headquartered in Milwaukee, Wisconsin, it is the largest sheet music publisher in the world.

The company produces sheet music, songbooks, and method book (with CD) packs, and band and choral arrangements, reference books, instructional DVDs, videos CD-ROMs, ShowTrax instrumental accompaniments, and music software.