The Toccata and Fugue in D minor, BWV 565, is a composition for organ by, according to the oldest sources, German composer Johann Sebastian Bach and is one of the most widely recognisable works in the organ repertoire. Although the date of its origin is unknown, scholars have suggested between 1704 and the 1750s. The piece opens with a toccata section followed by a fugue that ends in a coda, and is largely typical of the north German organ school of the Baroque era.

Johann Sebastian Bach was a German composer and musician of the late Baroque period. He is known for his prolific authorship of music across a variety of instruments and forms, including; orchestral music such as the Brandenburg Concertos; solo instrumental works such as the cello suites and sonatas and partitas for solo violin; keyboard works such as the Goldberg Variations and The Well-Tempered Clavier; organ works such as the Schubler Chorales and the Toccata and Fugue in D minor; and choral works such as the St Matthew Passion and the Mass in B minor. Since the 19th-century Bach Revival, he has been generally regarded as one of the greatest composers in the history of Western music.