Khulna-4 is a constituency represented in the Jatiya Sangsad (National Parliament) of Bangladesh. Since 6 August 2024, the constituency remains vacant.
The constituency encompasses Rupsa and Terokhada upazilas, as well as Barakpur, Dighalia, Gazirhat and Shenhati union parishads of Dighalia Upazila
The constituency was created for the first general elections in newly independent Bangladesh, held in 1973.
Ahead of the 2018 general election, the Election Commission reduced the boundaries of the constituency by removing two union parishads of Dighalia Upazila: Ayongghata and Jogipole.
Mostafa Rashidi Suja died in July 2018. Abdus Salam Murshedy was elected unopposed on 4 September, as he was the only candidate in the by-election scheduled for later that month.
Mostafa Rashidi Suja was elected unopposed in the 2014 general election after opposition parties withdrew their candidacies in a boycott of the election.