| Pirojpur-3 | |
| Parl Name: | Jatiya Sangsad |
| District: | Pirojpur District |
| Region Label: | Division |
| Region: | Barisal Division |
| Electorate: | 189,862 (2018) |
| Year: | 1984 |
Pirojpur-3 is a constituency represented in the Jatiya Sangsad (National Parliament) of Bangladesh.
The constituency encompasses Mathbaria Upazila.
The constituency was created in 1984 from a Bakerganj constituency when the former Bakerganj District was split into four districts: Bhola, Bakerganj, Jhalokati, and Pirojpur.
Ahead of the 2008 general election, the Election Commission redrew constituency boundaries to reflect population changes revealed by the 2001 Bangladesh census. The 2008 redistricting altered the boundaries of the constituency.
Ahead of the 2014 general election, the Election Commission reduced the boundaries of the constituency. Previously it had also included one union parishad of Bhandaria Upazila: Telikhali.