Haskell Warren Harr (June 27, 1894 – September 24, 1986) was an American percussionist, composer, and bandleader.
In 1906, at the age of twelve, he began to perform in local dance bands and pit orchestras on cornet and saxophone, the most significant of these being the White Hussars under Al Sweet.
In the 1920s, he began the Haskell Novelty Trio made up of xylophone, piano, and a woodwind doubler which played on local radio stations.
Seeking to improve his xylophone skills, Harr later took lessons from Roy Knapp and George Hamilton Green.
After retiring from teaching full-time, Harr became the educational director for the Slingerland Drum Company.