| Shumarinai Prefectural Natural Park | |
| Alt Name: | 朱鞠内道立自然公園 |
| Location: | Hokkaidō, Japan |
| Area: | 137.67 km2 |
| Established: | 30 April 1974 |
is a Prefectural Natural Park in northern Hokkaidō, Japan. Established in 1974, the park spans the municipalities of Enbetsu, Haboro, Horokanai, and Shibetsu.[1]
Lake Shumarinai was created artificially in 1943, after which asteroid 16525 Shumarinaiko was named.