Patuakhali-4 is a constituency represented in the Jatiya Sangsad (National Parliament) of Bangladesh. The current Member of Parliament in this constituency is ABM Mosharraf Hossain of Bangladesh Nationalist Party.
The constituency encompasses Kalapara and Rangabali upazilas.
The constituency was created for the first general elections in newly independent Bangladesh, held in 1973.
Mahbubur Rahman was re-elected unopposed in the 2014 general election after opposition parties withdrew their candidacies in a boycott of the election.