Baitul Falah, Islamic prayer center in Chittagong, Bangladesh.

Baitul Falah is a five-storey mosque beside the WASA headquarters in Dampara, Chittagong. Its main building is built with numerous arches, and the prayer space can hold about 10,000 people. A large open ground in front of the building is used for Eid prayers.

In 2013 Bangladesh's parliament passed the Islamic Foundation Bill, bringing the Jamiatul Falah mosque and its complex under the management of the Islamic Foundation. The mosque is maintained by the Chittagong City Corporation, and as of 2021 its khatib is Syed Mohammad Abu Taleb Alauddin Al-Kaderi.

The mosque sits on WASA Square and draws worshippers from many parts of Chittagong, making it a natural meeting point for the city's Muslim community. During Eid prayers, the surrounding area fills with people who gather outside when the interior reaches capacity.

The mosque is open to visitors outside of prayer times, but it is respectful to remove shoes before entering and dress modestly. Women are expected to cover their heads, so bringing a scarf is a good idea before arriving.

Just to the east of the main building lies an eidgah, an open field used for large outdoor prayers, which ranks among the three biggest Eid gathering spots in all of Chittagong. On major holidays, this ground fills with thousands of people who pray outside while the interior is full.