Ernö Rapée (or Erno Rapee) (4 June 1891 – 26 June 1945) was a Hungarian-born American symphonic conductor in the first half of the 20th century whose prolific career spanned both classical and popular music. His most famous tenure was as the head conductor of the Radio City Symphony Orchestra, the resident orchestra of the Radio City Music Hall, whose music was also heard by millions over the air on the radio program Radio City Music Hall of the Air.

A virtuoso pianist, Rapée is also remembered for popular songs that he wrote in the late 1920s as photoplay music for silent films. When not conducting live orchestras, he supervised film scores for sound pictures, compiling a substantial list of films on which he worked as composer, arranger or musical director.