John Francis "Jack" Smith Jr. (born April 6, 1938) is an American businessman and executive who formerly served as COO in 1992, CEO from 1992 to 2000 and then chairman of the board of directors of General Motors from 1996 to 2000. He later served as non-executive chairman of the board of directors of Delta Air Lines from 2004 to 2007. He also served as member of board of Procter & Gamble from 1995-2008 and also Suzuki Motor Corporation.