| Yanase Dam | |
| Dam Crosses: | Nahari River |
| Location: | Kitagawa, Kōchi, Japan |
| Dam Type: | Rock-fill dam |
| Dam Length: | 202 m |
| Dam Height: | 115 m |
| Dam Volume: | 2,800,000 m3 |
| Construction Began: | 1962 |
| Opening: | 1970 |
| Res Name: | Yanase Chosuichi Reservoir |
| Res Capacity Total: | 104,625,000 m3 |
| Res Catchment: | 117.1 km2 |
| Res Surface: | 291 ha |
| Coordinates: | 33.5931°N 134.1124°W |
is a dam in Kitagawa, Kōchi Prefecture, Japan, completed in 1970.[1] It is located on the Nahari River immediately upstream from the Kuki Dam and further upstream from the Hiranabe Dam.