The Karnaphuli Tunnel, also known as Bangabandhu Sheikh Mujibur Rahman Tunnel, is an underwater expressway tunnel in the port city of Chittagong, Bangladesh under the Karnaphuli River.

Karnaphuli Paper Mills, located in Chandraghona, Chittagong Division, Bangladesh, is a state-owned pulp and paper manufacturer established in 1951 by Pakistan Industrial Development Corporation.