| Country: | IND |
| Type: | NH |
| Route: | 431 |
| Map Custom: | yes |
| Length Km: | 70 |
| Terminus A: | Fatuha |
| Destinations: | Chandi - Harnaut |
| Terminus B: | Barh |
| Previous Type: | NH |
| Previous Route: | 331 |
| Next Route: | 531 |
| Next Type: | NH |
National Highway 431 (NH 431) is a National Highway in India.[1]
It runs from Fatwah, south to Daniawan, South east to Negar Nausa, then to Chandi, then east through Chainpur and Belchhi, then north to Barh