| Chittagong-9 | |
| Parl Name: | Jatiya Sangsad |
| District: | Chittagong District |
| Region Label: | Division |
| Region: | Chittagong Division |
| Electorate: | 3,90,431 (2018) |
| Year: | 1973 |
| Members Label: | Member of Parliament |
| Members: | Vacant |
| Party Label: | Parliamentary Party |
| Party: | Vacant |
| Local Council Label: | City Council area |
| Local Council: | Chattogram City Corporation |
| Blank1 Name: | Prev. Constituency |
| Blank1 Info: | Chittagong-8 (Constituency 285) |
| Blank2 Name: | Next Constituency |
| Blank2 Info: | Chittagong-10 (Constituency 287) |
Chittagong-9 is a constituency represented in the Jatiya Sangsad (National Parliament) of Bangladesh. Since 6 August 2024 the constituency is Vacant.
The constituency encompasses Chittagong City Corporation wards 15, 16, 17, 18, 19, 20, 21, 22, 23, 31, 32, 33, 34, 35.
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. The 2008 reapportionment added one seat to Chittagong City and altered the boundaries of the three other seats in the city, including this one.
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. Thus Chittagong-9 covers the area previously covered by Chittagong-8. Previously Chittagong-9 encompassed Chittagong City Corporation wards 11 through 14, and 24 through 26, and part of ward 8.
In the 2018 general election, the constituency was one of six chosen by lottery to use electronic voting machines.
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