Sunamganj-4 is a constituency represented in the Jatiya Sangsad (National Parliament) of Bangladesh.

The constituency encompasses Bishwamvarpur and Sunamganj Sadar upazilas.

[3] Ahead of the 2008 general election, the Election Commission redrew constituency boundaries to reflect population changes revealed by the 2001 Bangladesh census.

Previously it had also included one union parishad of Dowarabazar Upazila: Mannargaon.

Matiur Rahman, of the Awami League, was elected in a June 2009 by-election.