Arnstein is a town in the Main-Spessart district in the Regierungsbezirk of Lower Franconia (Unterfranken) in Bavaria, Germany.
The town lies on the banks of the river Wern and is roughly 20 km from Schweinfurt and 25 km from Würzburg.
Arnstein’s Stadtteile are:
Town rights were granted in 1333 by Emperor Louis the Bavarian.
The former Oberamt of the Prince-Bishopric of Würzburg was in Bavaria’s favour secularized and passed in 1805 to Archduke Ferdinand of Tuscany to form the Grand Duchy of Würzburg.
Within town limits, 8,403 inhabitants were counted in 1970, 7,640 in 1987 and in 2000 8,332.
The mayor is Linda Plappert-Metz (CSU). She succeeded Roland Metz (CSU/Junge Bürger) in 2002. In 2008 she was reëlected, this time against Bernd Röll (Freie Wähler).
The town’s arms might be described thus: Argent in base a mount of three vert, thereon an eagle reguardant wings expanded sable armed Or and langued gules.
The usual German word for eagle is Adler, but the poetic word Aar also exists…