Chittagong-6 is a constituency represented in the Jatiya Sangsad (National Parliament) of Bangladesh.

[2] The constituency was created for the first general elections in newly independent Bangladesh, held in 1973.

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

[4] Ahead of the 2014 general election, the Election Commission renumbered the seat for Chittagong-16 (Sandwip) to Chittagong-3, bumping up by one the suffix of the former constituency of that name and higher numbered constituencies in the district.

Previously Chittagong-6 encompassed Rangunia Upazila and one union parishad of Boalkhali Upazila: Sreepur Kharandwip.