Ostrožac Fortress is a castle located in Ostrožac, Cazin Municipality, Bosnia and Herzegovina. The castle dates back to the 16th century when the Ottomans founded the Ottoman province of Bosnia. A small addition was made to the castle between 1900 and 1906 for unconfirmed members of the Habsburg family. As of November 8, 2013, the Ostrožac Fortress is on the list of national monuments of Bosnia and Herzegovina.
