Nam Nao district
Nam Nao 
    น้ำหนาว  | |
|---|---|
District location in Phetchabun province  | |
| Coordinates: 16°46′6″N 101°40′18″E / 16.76833°N 101.67167°E | |
| Country | Thailand | 
| Province | Phetchabun | 
| Seat | Nam Nao | 
| Area | |
 • Total  | 620.0 km2 (239.4 sq mi) | 
| Population  (2000)  | |
 • Total  | 15,485 | 
| • Density | 25.0/km2 (65/sq mi) | 
| Time zone | UTC+7 (ICT) | 
| Postal code | 67260 | 
| Geocode | 6709 | 
Nam Nao (Thai: น้ำหนาว, pronounced [náːm nǎːw]) is the northeasternmost district (amphoe) of Phetchabun province, northern Thailand.