Chittagong-4 is a constituency represented in the Jatiya Sangsad (National Parliament) of Bangladesh. Since 6 August 2024, the constituency remains vacant.
The constituency encompasses the entirety of Sitakunda Upazila, the Bangladesh Military Academy, and parts of the Chattogram City Corporation, specifically No. 9 North Pahartali Ward and No. 10 North Kattali Ward, integrating these areas under a single administrative and electoral boundary.
The constituency was created for the first general elections in newly independent Bangladesh, held in 1973.
Ahead of the 2014 general election, the Election Commission renumbered the seat for Sandwip Upazila from Chittagong-16 to Chittagong-3, bumping up by one the suffix of the former constituency of that name and the higher numbered constituencies in the district. Previously Chittagong-4 encompassed Bayazid Thana and Hathazari Upazila.