Irving A. Aaronson (February 7, 1895 – March 10, 1963) was an American jazz pianist and big band leader.
Born in New York, Aaronson learned piano from Alfred Sendry at the David Mannes School for music. From age 11 he played accompaniment in silent movie theaters (called nickelodeons).
He co-wrote a hit song, "Boo-Hoo-Hoo", in 1921 and thereafter formed his own band. During the 1920s and the 1930s, he led two big bands and recorded with different record companies. The first group formed under his name was the Versatile Sextette in the early 1920s, later renamed the Crusaders Dance Band. In 1925, it was with this band that his first compositions were recorded.
The band signed with the Victor label where the band name was changed to Irving Aaronson and his Commanders. Signed to the label from 1926 to 1929, the band had a notable success with "Let's Misbehave" in 1927. The band appeared in Cole Porter's Broadway musical Paris, in 1928 and broadcast on KFWB, Hollywood, California, circa 1929.