| Tenjin Dam | |
| Name Official: | 天神ダム |
| Location: | Miyazaki Prefecture, Japan |
| Dam Length: | 441.7m |
| Dam Height: | 62.5m |
| Construction Began: | 1978 |
| Opening: | 2001 |
| Res Capacity Total: | 6700 thousand cubic meters |
| Res Catchment: | 10.2 sq. km |
| Res Surface: | 57 hectares |
| Coordinates: | 31.8186°N 131.2303°W |
| Location Map: | Japan |
Tenjin Dam is a rockfill dam located in Miyazaki Prefecture in Japan. The dam is used for irrigation. The catchment area of the dam is 10.2 km2. The dam impounds about 57 ha of land when full and can store 6700 thousand cubic meters of water. The construction of the dam was started on 1978 and completed in 2001.[1]