BTCL or Bangladesh Telecommunications Company Limited is the largest telecommunications company in Bangladesh. The company was founded as the Bangladesh Telegraph & Telephone Board (BTTB) following Bangladesh's independence in 1971. On July 1, 2008, the BTTB became a public limited company and was renamed BTCL. The Bangladesh government initially owned all BTCL shares but stated it would sell the shares to the public the following year. The value of BTCL BD is estimated to be at ৳15,000 crore (৳150 billion). BTCL has a total of 12,636 officials and staff.

BTCL BD provides land-line telephone services in Bangladesh's urban areas, including domestic long-distance calling and international services as well as internet services. In 2004, the Bangladesh Government issued a number of PSTN licenses to private companies, but they were barred from providing services in the lucrative Dhaka market (which accounts for the majority of the nationwide market). The monopoly held by BTCL was broken when other operators started to receive licenses in 2007.