Bagatelle sans tonalité ("Bagatelle without tonality", S.216a) is a piece for solo piano written by Franz Liszt in 1885. The manuscript bears the title "Fourth Mephisto Waltz" and may have been intended to replace the piece now known as the Fourth Mephisto Waltz when it appeared Liszt would not be able to finish it; the phrase Bagatelle ohne Tonart actually appears as a sub-title on the front-page of the manuscript.

Original Name Bagatelle sans tonalité
Date of composition 1885
First published 1956, Editio Musica Budapest in Budapest, Hungary
Catalogue S. 216a
Instruments Piano
Autotranslations beta Franz Liszt: Bagatelle without tonality, S. 216a
Franz Liszt: Bagatelle without tonality, S. 216a
Franz Liszt: Bagatelle without tonality, S. 216a