Wolfenbüttel is a town in Lower Saxony, Germany, located on the Oker river about 13 kilometres south of Brunswick. It is the seat of the District of (Landkreis) Wolfenbüttel and of the bishop of the Protestant Lutheran State Church of Brunswick. It is also the southernmost of the 172 towns in northern Germany whose names end in büttel, meaning "residence" or "settlement."
Wolfenbüttel became the residence of the dukes of Brunswick in 1432. Over the following three centuries it grew to be a centre of the arts, and personages such as Michael Praetorius, Johann Rosenmüller, Gottfried Leibniz, and Gotthold Ephraim Lessing lived there. The ducal court eventually returned to Braunschweig in 1753 and Wolfenbüttel subsequently lost in importance.
The Battle of Wolfenbüttel, part of the Thirty Years' War, was fought here in June 1641, when the Swedes under Wrangel and the Count of Königsmark defeated the Austrians under Archduke Leopold of Habsburg.
The town is also the location of the former Northampton Barracks, which housed units of the B.A.O.R. until 1993 (postcode: BFPO 33).
Today Wolfenbüttel is smaller than the neighbouring cities of Braunschweig, Salzgitter, and Wolfsburg, but, because it was largely undamaged by the war, its downtown is rich in half-timber buildings, many dating several centuries back, and it still retains its historical character.
The herb liqueur Jägermeister is distilled in Wolfenbüttel and the headquarters is still located there.
A bridge in Wolfenbüttel is named after each of these cities.