Shikotsu-Tōya National Park (支笏洞爺国立公園, Shikotsu Tōya Kokuritsu Kōen) is a national park in the western part of the island of Hokkaidō, Japan. Named after the volcanic caldera lakes of Lake Shikotsu and Lake Tōya, it has a total area of 993.02 square kilometers.