| Makio Dam | |
| Name Official: | 牧尾ダム |
| Dam Crosses: | Otaki River, Kiso River |
| Location: | Nagano Prefecture, Japan |
| Dam Type: | F |
| Dam Length: | 260 m (853 ft) |
| Dam Height: | 104.5 m (342.8 ft) |
| Dam Volume: | 2,616,000 m³ (3,421,599 yd³) |
| Res Name: | Lake Mitake |
| Res Catchment: | 304 km² (117.4 mi²) |
| Plant Operator: | Kansai Electric Power Company |
| Plant Capacity: | 37 |
| Coordinates: | 35.8242°N 137.6028°W |
| Purpose: | Irrigation, power generation |
Makio Dam (Japanese: 牧尾ダム) is a dam in Nagano Prefecture, Japan, completed in 1961.[1]