Oetenbach was a Dominican nunnery in the medieval municipality of Zürich in Switzerland. Oetenbach was named after the small stream of the same name at its first location at Zürichhorn, situated outside of the European Middle Ages town walls, but moved to the present Sihlbühl. The nunnery was abolished on occasion of the Reformation in Zürich – the Waisenhaus building is its only remained structure, now the headquarters of Stadtpolizei Zürich.