Ottersweier is a municipality in western Baden-Württemberg, Germany.

It is part of the district of Rastatt, and lies between the larger towns Bühl and Achern.

In 1774, the widow Margravine Maria Viktoria Pauline von Arenberg moved her residence from Baden-Baden to Ottersweier to establish a convent school for the Augustinian choir nuns in the former residence of the Jesuits.

In the convent school, young girls learned skills they needed as future mothers and educators.

This Rastatt district location article is a stub.