George Herbert Walker III is the U.S. ambassador to Hungary and the first cousin of former President George H. W. Bush.

Walker's grandfather, George Herbert Walker I, was the founder of G. H. Walker & Co., which is now part of the Merrill Lynch conglomerate. Walker is married to the former Carol Banta and they have eight children and eight grandchildren. Walker's son, George Herbert Walker IV is a "Pioneer," the name given to large financial contributors to the United States Republican Party.