Brian Charles Duperreault (born May 8, 1947) is a Bermuda-born American executive in the insurance industry. He is executive chairman and former CEO of American International Group. Duperreault's entire career has been in the insurance industry, beginning in 1973 as an actuary at AIG. He quickly rose through the ranks to become one of AIG's most senior executives, eventually heading all of AIG's international operations.