Susan Carol Schwab is an American politician, who served under President George W. Bush as United States Trade Representative from June 2006 to January 2009. She is not related to Charles R. Schwab Sr., founder of the Charles Schwab Corporation; she is also not to be confused with his first wife Susan (Cotter) Schwab.

The Office of the United States Trade Representative (USTR) is an agency of the United States federal government responsible for developing and promoting American trade policy. Part of the Executive Office of the President, it is headed by the U.S. Trade Representative, a Cabinet-level position that serves as the U.S. President's primary advisor, negotiator, and spokesperson on trade matters. USTR has more than two hundred employees, with offices in Geneva, Switzerland, and Brussels, Belgium.