| Chittagong-1 | |
| Parl Name: | Jatiya Sangsad |
| District: | Chittagong District |
| Region Label: | Division |
| Region: | Chittagong Division |
| Electorate: | 315,016 (2018) |
| Year: | 1973 |
| Members Label: | Member of Parliament |
| Members: | Vacant |
| Party Label: | Parliamentary Party |
| Party: | Vacant |
| Local Council Label: | Council area |
| Local Council: | Mirsharai Upazila |
| Blank1 Name: | Prev. Constituency |
| Blank1 Info: | Lakshmipur-4 (Constituency 277) |
| Blank2 Name: | Next Constituency |
| Blank2 Info: | Chittagong-2 (Constituency 279) |
Chittagong-1 is a constituency represented in the Jatiya Sangsad (National Parliament) of Bangladesh. Since 6 August 2024, the constituency is Vacant.
The constituency encompasses Mirsharai Upazila.
The constituency was created for the first general elections in newly independent Bangladesh which was held in 1973.
Mosharraf Hossain was re-elected unopposed in the 2014 General Election after opposition parties withdrew their candidacies in a boycott of the election.
Khaleda Zia stood for five seats in the June 1996 general election: Bogra-6, Bogra-7, Feni-1, Lakshmipur-2 and Chittagong-1. After winning all five, she chose to represent Feni-1 and quit the other four, triggering by-elections in them. Mosharraf Hossain was elected in a September 1996 by-election.