Shamsuddeen Usman, CON, OFR (born 18 September 1949) is a Nigerian economist, banker and public servant. He is currently the CEO of SUSMAN & Associates, an economic, financial and management consulting firm headquartered in Nigeria. He was the Finance Minister of Nigeria between June 2007 and January 2009 and also served as the Minister of National Planning from January 2009 to September 2013. Usman is the Chairman of Citibank Nigeria Limited.