| Bairia | |
| Native Name Lang: | hi |
| Settlement Type: | Village |
| Pushpin Map: | India Bihar |
| Subdivision Type: | Country |
| Coordinates: | 27.108°N 84.464°W |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Bihar |
| Subdivision Type2: | District |
| Subdivision Name2: | West Champaran district |
| Unit Pref: | Metric |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Hindi |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Iso Code: | IN-BR |
Bairia is a block and a village in West Champaran district in the Indian state of Bihar.
The census town of Hat Saraiya and 51 villages comprise Bairia block in West Champaran.[1]
India census, Bairia had a population of 13,324 in 2570 households. [2]