Tun Ismail bin Mohamed Ali (16 September 1918 – 6 July 1998) was the second Governor of Bank Negara Malaysia and the chairman of the Pemodalan Nasional Berhad (PNB).
He was stranded in England as a result of the Second World War and continued to learn his law studies in 1943 at the Inns of Court in London, Middle Temple and became a lawyer after that.
Tun Ismail joined the Malayan Civil Service; Assistant Secretary of State Government (1948) - one of the first non-European officers recruited directly into the MCS.
He has served as Assistant Secretary in the Economics Department of the Treasury; economic officials in Andhra Pradesh, India; Guard in the Department of Commerce Ministry of Commerce and Industry; at the Malaysian Embassy in Washington DC (1957-1960); Executive Director of the International Bank for Reconstruction and Development (IBRD) in the United States .
He was influential on planning and directing the historic 'Dawn Raid' attack of buying Guthrie's shares in London Stock Exchange in September 1981.