| Sakaigawa Dam | |
| Location Map: | Japan |
| Coordinates: | 36.3489°N 136.8397°W |
| Country: | Japan |
| Location: | nanto, Toyama Prefecture |
| Purpose: | Power |
| Status: | O |
| Construction Began: | 1973 |
| Opening: | 1993 |
| Dam Type: | Gravity |
| Dam Height: | 115m (377feet) |
| Dam Length: | 297.5m (976feet) |
| Dam Volume: | 713000m2 |
| Dam Crosses: | Shō River |
| Res Capacity Total: | 59900000m2 |
| Res Capacity Active: | 56100000m2 |
| Res Catchment: | 37.7km2 |
| Res Surface: | 1.6km2 |
| Res Elevation: | 567.6m (1,862.2feet) |
| Plant Hydraulic Head: | 216.7m (711feet) |
| Plant Operator: | Kansai Electric Power Co., Inc. |
| Plant Commission: | 2 June 1993 |
| Plant Turbines: | 1 x 27 MW Francis-type |
| Plant Capacity: | 27 MW |
is a dam in Nanto, Toyama Prefecture and Shirakawa, Gifu Prefecture, Japan.[1] It is named for the Sakaigawa River (a tributary of the Shō River), upon which it is built. The dam has an associated 27 MW hydroelectric power station about 2.9km (01.8miles) downstream. It was commissioned in June 1993.[2]