Sanada Treasures Museum, Historical museum in Matsushiro, Japan

The Sanada Treasures Museum is a municipal history museum in Matsushiro, Nagano, opened in 1969 in the former Nagano Prefectural Matsushiro High School building. It holds about 50,000 objects donated by Sanada Yukiharu, the 12th head of the Sanada family, in 1966, mainly armor, swords, furnishings, paintings and a large body of documents. Displays occupy a new wing and an old wing with thematic rooms.

In 1966 Sanada Yukiharu, the 12th head of the Sanada family, donated the family's daimyo tools and other heirlooms to Matsushiro town, which merged into Nagano that October. The city opened the museum on 12 June 1969 in the former Nagano Prefectural Matsushiro High School building, and a new wing was added in 1977.

The Sanada family shaped life in Matsushiro for centuries, and the museum reflects how deeply rooted that presence still is in the area. Visitors can see objects that were part of everyday samurai leadership, from writing tools to ceremonially decorated weapons.

The museum is in Matsushiro, reached by Alpico Kawanakajima bus lines 30 or 48 from Nagano Station, getting off at Matsushiro Station; by car it is 10 minutes from Nagano Interchange on the Joshinetsu Expressway. It opens 9:00-17:00 and closes on Tuesdays, except when Tuesday is a public holiday. Nearby are the former Sanada residence and the Bunbu School.

Among the objects in the collection are documents signed on opposing sides of the same conflict, since the Sanada famously split their allegiances during key wars to ensure the family's survival regardless of who won. This makes the collection a rare record of a clan that sometimes faced itself across the battlefield.