The Hamashiriya Shell Midden (浜尻屋貝塚, Hamashiriya Kaizuka) is an archaeological site consisting of a series of Shell middens and the remains of an adjacent settlement located in the village of Higashidōri on the Shimokita Peninsula of Aomori Prefecture in the Tōhoku region of far northern Japan.

During the Muromachi period, trade between Japan and China flourished, and dried abalone was an important export product, mentioned frequently in contemporary documents.

[2] It is uncertain of any trade took place directly from this site with China, although the presence of Chinese coins and ceramics raises the possibility.

[3] In an excavation conducted in 2002, a fragment of a human skull was found at the site, and upon analysis was determined to date from about 500 to 700 years ago and share traits belonging to both Ainu and contemporary Japanese.

[4] There are no public facilities at the site, which is located approximately 10 minutes by car from the JR East Shimokita Station.