The Shakotan Peninsula (積丹半島, Shakotan hantō) in Shiribeshi, on the west coast of Hokkaidō, Japan, is a mountainous peninsula which projects some 30 kilometres (19 mi) into the Sea of Japan.

The Shakotan Peninsula forms part of the Niseko-Shakotan-Otaru Kaigan Quasi-National Park.

The coastline of the peninsula suffers from extensive marine erosion, which resulted in the numerous natural stone pillars which project from the sea.

[2] Mount Shakotan (1,255 metres (4,117 ft)) forms the highest peak on the peninsula.

The area was once a thriving center of Pacific herring fishing, which was conducted from the villages of Furubira, Iwanai, and Yoichi.