Ngao River

Ngao River (แม่น้ำเงา)
River
Ngao River in Ngao town
Country	Thailand
States	Phayao Province, Lampang Province, Phrae Province
City	Ngao town
Source
- location	Phi Pan Nam Range, Phayao Province
- elevation	1,267 m (4,157 ft)
Mouth	Yom River
- location	Kaeng Suea Ten area, Song District, Phrae Province
- elevation	195 m (640 ft)
- coordinates	18°35′54″N 100°8′53″E / 18.59833°N 100.14806°E / 18.59833; 100.14806Coordinates: 18°35′54″N 100°8′53″E / 18.59833°N 100.14806°E / 18.59833; 100.14806
Length	80 km (50 mi)
Basin	1,800 km2 (695 sq mi)

The Ngao River (Thai: น้ำเงา) is a river of Thailand with its source in the Phi Pan Nam Range. It is a tributary of the Yom River, part of the Chao Phraya River basin.

This river should not be confused with the Ngao River that is a tributary of the Yuam River (แม่น้ำยวม), part of the Salween basin, located to the west.