Anu Aga (born 3 August 1942) is an Indian billionaire businesswoman and social worker who led Thermax, an energy and environment engineering business, as its chairperson from 1996 to 2004. She was among the eight richest Indian women, and in 2007 was part of 40 richest Indians by net worth according to Forbes magazine. She was awarded with the Mumbai Women of the Decade Achievers Award by ALL Ladies League, the all ladies wing of ASSOCHAM.