Brahmanbaria is a city located in eastern Bangladesh. It serves as the capital of both the Brahmanbaria District and the Brahmanbaria Sadar Upazila. The city holds historical significance as one of the oldest municipalities in the country, having been established in 1868.
As of 2022, the municipality area has a population of 265,000, making it the 14th largest city in Bangladesh and the second largest city in the eastern region after Cumilla. Brahmanbaria was officially declared a district headquarters in 1984.
The region is notable for hosting the Titash Gas Field, which is the largest gas field in Bangladesh.