| Miyatoko Dam | |
| Name Official: | 宮床ダム |
| Dam Crosses: | Miyatoko River |
| Location: | Taiwa, Miyagi, Japan |
| Dam Type: | Concrete Gravity Dam |
| Dam Length: | 256 meters |
| Dam Height: | 48 meters |
| Dam Volume: | 329,000 m3 |
| Construction Began: | 1979 |
| Opening: | 1998 |
| Res Name: | Lake Asahina |
| Res Capacity Total: | 5,000,000 m3 |
| Res Catchment: | 10.8 km2. |
| Res Surface: | 43 hectares |
| Location Map: | Japan Miyagi Prefecture#Japan |
| Coordinates: | 38.3869°N 140.8222°W |
is a multi-purpose dam on the Miyatoko River, a branch of the Naruse River in the town of Taiwa, Kurokawa District Miyagi Prefecture, Japan. The dam was completed in 1998.[1]