List of organ compositions by Johann Sebastian Bach

Organ compositions by Johann Sebastian Bach refers to the compositions in the seventh chapter of the Bach-Werke-Verzeichnis (BWV, catalogue of Bach's compositions), or, in the New Bach Edition, the compositions in Series IV.
Chorale Preludes.
Traditionally known as chorale preludes, the compositions in the BWV 599–771 range of the "Bach-Werke-Verzeichnis", and later additions BWV 1085, 1090–1120 ("Neumeister Chorales") and 1128, are also indicated as chorale settings for organ, and include multi-movement chorale partitas and sets of variations.
 
"Orgelbüchlein" ("Little Organ Book", BWV 599–644).
The "Orgelbüchlein" contains 46 chorale preludes, and a fragment (BWV Anh. 200).
"Schübler Chorales" (BWV 645–650).
Most of the "Schübler Chorales", which were published around 1748 as "Sechs Chorale von verschiedener Art" (Six Chorales of Various Kinds), are transcriptions of extant cantata movements:
24 chorale preludes, formerly known as "from the Kirnberger collection" (BWV 690–713).
The 24 chorale preludes and five variants published as "from the Kirnberger Collection" ("in Kirnberger's Sammlung") in the 40th volume of the Bach-Gesellschaft Ausgabe (1893) were all retained in the 690–713a range of the "Bach-Werke-Verzeichnis". Johann Kirnberger's involvement with this collection of chorale preludes, some of which are spurious or doubtful, is however uncertain: modern scholarship no longer refers to this set as "Kirnberger Collection" (unless with qualifiers such as "so-called" or "formerly").
Later additions to the BWV catalogue.
Neumeister Chorales (BWV 1090–1120).
31 chorale preludes for organ, discovered 1985 in the archives of the Yale University library.
Organ compositions in the seventh chapter of the "Bach-Werke-Verzeichnis" (1998).
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BWV Anhang.
Various lost, doubtful and spurious organ works are included in the BWV Anhang: