A. S. M. Shahjahan (9 March 1941 – 5 February 2019)[2][3] was a Bangladeshi government police officer, civil servant and educator.
He served as Adviser to non party Caretaker government of Bangladesh[4] (2001), led by Chief Justice Latifur Rahman.
Following the provision for caretaker government through 13th Amendment of the Constitution, the second caretaker government was formed on 15 July 2001 with former Chief Justice, Justice Latifur Rahman, as the Chief Adviser.
Shahjahan was sworn in as Adviser, a position equivalent to that of a Cabinet Minister of the non-party caretaker government on 15 July 2001 led by the Honorable President of Bangladesh Shahabuddin Ahmed.
He continued his work as senior adviser for Police Reform Program of United Nations Development Programme,[5] a program designed to improve the efficiency and effectiveness of the Bangladesh Police in joint partnership with UNDP, Department for International Development (DFID) and the European Commission.