This article is about the musical genre. For information on the Symphony No. 3 with organ by Camille Saint-Saëns, see Symphony No. 3 (Saint-Saëns).

An organ symphony is a piece for solo pipe organ in various movements. It is a symphonic genre, not so much in musical form (in which it is more similar to the organ sonata or suite), but in imitating orchestral tone color, texture, and symphonic process.