| Kodomari Dam | |
| Name Official: | 小泊ダム |
| Dam Type: | G |
| Dam Crosses: | Kodomari River |
| Country: | Japan |
| Location: | Nakadomari, Aomori Japan |
| Purpose: | FNW |
| Builder: | Okumura Gumi |
| Operator: | Aomori Prefecture |
| Dam Length: | 121.5 meters |
| Dam Height: | 33.5 meters |
| Res Name: | Yusenko |
| Res Capacity Total: | 400,000 m3 |
| Res Capacity Active: | 340,000 m3 |
| Status: | O |
| Construction Began: | 1988 |
| Opening: | 1996 |
| Res Catchment: | 2.4 km2 |
| Res Surface: | 4.23 hectares |
| Coordinates: | 41.1292°N 140.3381°W |
The is a dam on the Kodomari River, located in the town of Nakadomari, Kitatsugaru District, Aomori Prefecture in the Tohoku region of Japan.
The dam is a concrete gravity dam across the Kodomari River. It is multipurpose dam to provide water for irrigation, flood control and drinking water.