Casper Reardon (April 15, 1907 – March 9, 1941) was a classical and jazz harpist. He studied classical harp at the Curtis Institute of Music going on to play for the Philadelphia Orchestra and the Cincinnati Symphony Orchestra. Later he played jazz as well.
The harp had been used in dance music for occasional flourishes before Reardon, but he is considered a first for using harp as a jazz instrument for solos and performances. By 1936 he was described as the "World's Hottest Harpist." During the following year he played "Cousin Caspar" in the film You're a Sweetheart. The year after that, 1938, he played harp for the Broadway musical I Married an Angel.
As a jazz musician he can be heard on albums by Jack Teagarden and Paul Whiteman. He recorded a handful of records for Liberty Music Shop Records and Schirmer Records.