| Barsain | |
| Native Name: | बर्साइन |
| Settlement Type: | Village development committee |
| Mapsize: | 300px |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 360 |
| Pushpin Map Caption: | Location in Nepal |
| Subdivision Type: | Country |
| Subdivision Name: |  Nepal |
| Subdivision Type1: | Zone |
| Subdivision Name1: | Sagarmatha Zone |
| Subdivision Type2: | District |
| Subdivision Name2: | Saptari District |
| Population As Of: | 2011 |
| Population Note: | [1] |
| Population Total: | 5458 |
| Population Density Km2: | auto |
| Population Blank1 Title: | Ethnicities |
| Timezone: | Nepal Time |
| Utc Offset: | +5:45 |
Barsain is a village development committee in Saptari District in the Sagarmatha Zone of south-eastern Nepal. At the time of the 2011 Nepal census it had a population of 5458 people living in 991 individual households.