Bach-Werke-Verzeichnis

The Bach-Werke-Verzeichnis (BWV; lit. 'Bach works catalogue'; German: [ˈbax ˈvɛrkə fɛrˈtsaɪçnɪs]) is a catalogue of compositions by Johann Sebastian Bach. It was first published in 1950, edited by Wolfgang Schmieder. The catalogue's second edition appeared in 1990. An abbreviated version of that second edition, known as BWV^2a, was published in 1998.

The catalogue groups compositions by genre. Even within a genre, compositions are not necessarily collated chronologically. For example, BWV 992 was composed many years before BWV 1. BWV numbers were assigned to 1,126 compositions in the 20th century, and more have been added to the catalogue in the 21st century. The Anhang (Anh.; Annex) of the BWV lists over 200 lost, doubtful and spurious compositions.