The Murakami Kaizoku Museum is a museum on the island of Ōshima in Imabari, Ehime Prefecture, Japan, dedicated to the Murakami Kaizoku, the Murakami Clan "pirates" or "feudal navies" . The museum opened as the Imabari City Murakami Suigun Museum (今治市村上水軍博物館) in 2004, replacing the nearby Museum of Noshima Murakami Suigun (能島村上水軍資料館), and changed to its current name on 1 April 2020. The collection and displays include arms and armour, historic documents, and scale model boats.