Irwin Heilner (b. New York City, May 14, 1908; d. January 18, 1991) was an American composer of contemporary classical music.
Heilner lived in Brooklyn. In 1932 he was a member of the Young Composers' Group, which was founded by the composer Elie Siegmeister and which met regularly at the home of the composer Aaron Copland. Heilner studied with Nadia Boulanger beginning in the late spring of 1932, having been recommended by Aaron Copland. The two did not get along, however, and his planned three years of study lasted for just three months. His music was championed and recorded by William Strickland.