Ikeda Masuo Art Museum, Biographical art museum in Nagano, Japan.

The Ikeda Masuo Art Museum stands on the south side of Matsushiro Castle in Nagano. It is attached to the Matsushiro branch of Chikufudo, a chestnut-sweet maker from Obuse, and holds works by Masuo Ikeda, an artist raised in Nagano. The museum opened in April 1997 and closed at the end of July 2017.

The museum opened in April 1997 in Matsushiro, south of Matsushiro Castle, in Nagano, the city where Masuo Ikeda grew up. It is run by the chestnut-sweets firm Chikufudo, based in Obuse, and adjoins the company's Matsushiro shop. On 21 June 2017 the operator announced that the museum would close at the end of July 2017.

The museum displays works by an artist whose prints became known across the world and were regularly shown in major international exhibitions. The collection tells the story of a creative life that connected different cultures and artistic traditions.

The museum stands on the south side of Matsushiro Castle, attached to the Takenindo Matsushiro shop of the chestnut-sweets maker Takenindo, based in Obuse, which runs it. It opened in April 1997 and closed at the end of July 2017. To reach Matsushiro, take Alpico Kotsu (Kawanakajima Bus) lines 30 or 48 from JR Nagano Station or Nagano Electric Railway Nagano Station and get off at Matsushiro Station.

The museum opened in April 1997 next to the Matsushiro branch of Chikufudo, a chestnut-sweet maker from Obuse, which runs it. It closed at the end of July 2017, so the building no longer operates as a museum. It stood on the south side of Matsushiro Castle, in Nagano city where Ikeda Masuo grew up.