| Hasanpur, Bihar | |
|---|---|
| Constituency No. 140 for the Bihar Legislative Assembly | |
 | |
| Constituency details | |
| Country | India |
| Region | East India |
| State | Bihar |
| District | Samastipur |
| LS constituency | Khagaria |
| Established | 1967 |
| Reservation | None |
| Member of Legislative Assembly | |
| 17th Bihar Legislative Assembly | |
 | |
| Incumbent | |
| Party |  RJD |
| Alliance | I.N.D.I.A. |
| Elected year | 2020 |
| Preceded by | Mr. Raj Kumar Rai, _Flag.svg){kind=small} JD(U) |
Hasanpur is an assembly constituency in Rosera Subdivision of Samastipur district in the Indian state of Bihar.