Keith James Rothfus (born April 25, 1962) is an American lawyer and politician who served as the U.S. representative for Pennsylvania's 12th congressional district from 2013 to 2019. He succeeded Democratic Representative Mark Critz, whom he defeated in the 2012 election. Prior to serving in Congress, he worked as an attorney. After new congressional district maps were released by the Pennsylvania Supreme Court in February 2018, Rothfus became a candidate in Pennsylvania's 17th congressional district, where he was defeated for re-election by the incumbent from the 18th district, Democrat Conor Lamb.