The Hungarian Dances (German: Ungarische Tänze) by Johannes Brahms (WoO 1), are a set of 21 lively dance tunes based mostly on Hungarian themes, completed in 1879.
They vary from about a minute to five minutes in length. They are among Brahms's most popular works and were the most profitable for him. Each dance has been arranged for a wide variety of instruments and ensembles. Brahms originally wrote the version for piano four hands (piano duet: two players using one piano) and later arranged the first ten dances for solo piano.
Only numbers 11, 14 and 16 are entirely original compositions. The better-known Hungarian Dances include Nos. 1 and 5, the latter of which was based on the csárdás "Bártfai emlék" (Memories of Bártfa) by Hungarian composer Béla Kéler, which Brahms mistakenly thought was a traditional folksong. A footnote on the Ludwig-Masters edition of a modern orchestration of Hungarian Dance No.1 states: "The material for this dance is believed to have come from the Divine Csárdás (ca. 1850) of Hungarian composer and conductor Miska Borzó."