Irving A. Aaronson (February 7, 1895 – March 10, 1963) was an American jazz pianist and big band leader. Aaronson's orchestra was one of the most popular in America during the Roaring Twenties. His most popular song, "The Loveliest Night of the Year", was not recorded with his band but was adapted by Aaronson in 1950 for the Mario Lanza film The Great Caruso.
