Cox's Bazar-4 is a constituency represented in the Jatiya Sangsad (National Parliament) of Bangladesh. Since 6 August 2024 the constituency is Vacant.
The constituency encompasses Teknaf and Ukhia upazilas.
The constituency was created in 1984 from the Chittagong-18 constituency when the former Chittagong District was split into two districts: Chittagong and Cox's Bazar.