| Sirajganj-1 | |
| Parl Name: | Jatiya Sangsad |
| District: | Sirajganj District |
| Region Label: | Division |
| Region: | Rajshahi Division |
| Electorate: | 345,603 (2018) |
| Year: | 1984 |
Sirajganj-1 is a constituency represented in the Jatiya Sangsad (National Parliament) of Bangladesh since 2024 by Tanvir Shakil Joy of the Awami League.
The constituency encompasses Kazipur Upazila and five union parishads of Sirajganj Sadar Upazila: Bagbati, Bahuli, Mechhra, Ratankandi, and Chhongachha.
The constituency was created in 1984 from a Pabna constituency when the former Pabna District was split into two districts: Sirajganj and Pabna.
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 2018 general election, the Election Commission expanded the boundaries of the constituency by adding one union parishad of Sirajganj Sadar Upazila: Bahuli.
| Election | Member | Party | |
|---|---|---|---|
| 1986 | Mohammed Nasim | Awami League | |
| 1988 | Shafiqul Islam | Independent | |
| 1991 | Mohammed Nasim | Awami League | |
| Sep 1996 by-election | Mohammad Salim | ||
| 2001 | Mohammed Nasim | ||
| 2008 | Tanvir Shakil Joy | ||
| 2014 | Mohammed Nasim | ||
| 2020 by-election | Tanvir Shakil Joy | ||
Mohammed Nasim was elected unopposed in the 2014 general election after opposition parties withdrew their candidacies in a boycott of the election.
Mohammed Nasim stood for two seats in the June 1996 general election: Sirajganj-1 and Sirajganj-2. After winning both, he chose to represent Sirajganj-2 and quit Sirajganj-1, triggering a by-election in Sirajganj-1. Mohammad Salim of the Awami League was elected in a September by-election.