Shiriuchi (知内町, Shiriuchi-chō) is a town located in Oshima Subprefecture, Hokkaido, Japan.

As of September 2016, the town has an estimated population of 4,620, and a density of 23 persons per km2.

Shiriuchi is located on the southwest of the Oshima Peninsula and faces Tsugaru Strait.

Kaikyō Line runs through the town, and the Hokkaido portal of the Seikan Tunnel is in Yunosato.

Media related to Shiriuchi, Hokkaidō at Wikimedia Commons