Altshausen is a small Swabian municipality with around 4,100 inhabitants, near the city of Ravensburg in Baden-Württemberg, in southern Germany.

Altshausen is situated in Upper Swabia, about 40 kilometers north of Lake Constance.

North-west of the village is the Upper Danube Nature Park while to the South-west is the hill-chain of the Altdorfer Wald.

It is notable for its Teutonic Order castle and as the birthplace of Hermann of Reichenau.

In the center of the town there is the Altshausen Schloss, which is the main palace still owned by the House of Württemberg.