| Country: | IND |
| Type: | NH |
| Route: | 527B |
| Map Custom: | yes |
| Length Km: | 54 |
| Terminus A: | Darbhanga |
| Destinations: | Khirma |
| Terminus B: | Jainagar |
| States: | Bihar |
| Previous Type: | NH |
| Previous Route: | 27 |
| Next Route: | 227 |
| Next Type: | NH |
National Highway 527B (NH 527B) is a National Highway in India.It is important highway in India-Nepal connectivity.