| Rentaki Dam | |
| Name Official: | レン滝ダム |
| Location: | Iwate Prefecture, Japan |
| Dam Length: | 170m |
| Dam Height: | 37.7m |
| Opening: | 1968 |
| Res Capacity Total: | 1869 thousand cubic meters |
| Res Catchment: | 14.1 sq. km |
| Res Surface: | 23 hectares |
| Coordinates: | 39.5694°N 140.9128°W |
| Location Map: | Japan |
Rentaki Dam is a gravity dam located in Iwate Prefecture in Japan. The dam is used for flood control. The catchment area of the dam is 14.1 km2. The dam impounds about 23 ha of land when full and can store 1869 thousand cubic meters of water. The construction of the dam was completed in 1968.[1]