Bangladesh Institute of International and Strategic Studies (BIISS) is a state-owned autonomous national research institute and think tank working as a statutory institute that carries out research on security and strategic issues in Bangladesh and is located in Dhaka, Bangladesh. Major General A. S. M. Ridwanur Rahman is current Director General and Ambassador A F M Gousal Azam Sarker is the current Chairman of BIISS.
The institute was established in 1978 by the Government of Bangladesh as a statutory organisation. The institute is under the Ministry of Foreign Affairs.