Obama Castle (小浜城, Obama-jō) is a castle located in Obama, Fukui Prefecture, Japan. The castle is also known as Unpin Castle (雲浜城, Unpin-jō). In 1601 (Keichō 6), after receiving Wakasa Province due to successes in the Battle of Sekigahara, Kyōgoku Takatsugu (京極高次) built Obama Castle by using local fisherman as workers. In 1634 (Kan'ei 11), Sakai Tadakatsu (酒井忠勝) took control of the castle after the Kyōgoku family moved to Izumo near Matsue.