| Kassa Dam | |
| Name Official: | カッサダム |
| Dam Crosses: | Shinano River |
| Location: | Yuzawa, Niigata, Japan |
| Dam Type: | F |
| Res Catchment: | 4.5 km² (1.74 mi²) |
| Plant Operator: | J-Power |
| Plant Capacity: | 1,000MW 600MW |
| Dam Height Foundation: | 90 m (295.3 ft) |
| Purpose: | P |
| Plant Name: | Okukiyotsu Power Plant Okukiyotsu No. 2 Power Plant |
is a dam in Yuzawa, Niigata Prefecture, Japan, completed in 1978.[1]