Thornburgh is a surname. Notable people with the surname include:
David Thornburgh, American chief executiveDick Thornburgh (born 1932), American politician; governor of Pennsylvania 1979–87; U.S. Attorney General 1988–91Elaine Thornburgh, American musicianGeorge Thornburgh (1847–1923), American politicianJacob Montgomery Thornburgh (1837–1890), American politician from Tennessee; U.S. representative 1873–79Ron Thornburgh (contemporary), American politician; Secretary of State of Kansas since 1994