Susan Bonzon Ralston (born October 15, 1967), is the President of SBR Enterprises, LLC, a government affairs, public relations and business consulting firm, which assists businesses with strategic partnership development, public affairs and public relations activities. Ralston was formerly Special Assistant to President George W. Bush and a deputy to Karl Rove, the Deputy Chief of Staff and Senior Advisor at the White House, from 2001 until her resignation in 2006.