Joseph Carl Hietpas (born May 1, 1979) is an United States former Major League Baseball player. Hietpas attended Northwestern University, Illinois. In 2004, Hietpas was called up to the New York Mets once the roster expanded in September. He suffered an injury during batting practice one day, which forced him to be able to only play in one game, October 3, 2004, against the Montreal Expos. He came into the game as a ninth inning substitute for Todd Zeile. Because the Mets won the game, 8-1, the bottom half of the final inning was never played, and Hietpas did not receive an at-bat. In that game, he was a catcher, but after the 2006 season, converted to pitcher.