| Sadamisaki Hantō-Uwakai Prefectural Natural Park | |
| Alt Name: | 佐田岬半島宇和海県立自然公園 |
| Map: | Japan Ehime Prefecture#Japan |
| Relief: | 1 |
| Location: | Ehime Prefecture, Japan |
| Nearest City: | Ikata, Seiyo, Yawatahama |
| Coordinates: | 33.386°N 132.341°W |
| Area: | (including marine area) |
| Established: | 15 October 1965 |
is a Prefectural Natural Park in Ehime Prefecture, Japan. Established in 1965, the park spans the borders of the municipalities of Ikata, Seiyo, and Yawatahama. The park's central features are the eponymous Sadamisaki Peninsula and .[1] [2]