John Gary Glover (born December 3, 1976) is an American former professional baseball pitcher. He had a career major league ERA of 5.03 over eight seasons, including time spent with the Anaheim Angels, Chicago White Sox, Detroit Tigers, Milwaukee Brewers, Tampa Bay Devil Rays/Rays and Toronto Blue Jays, who selected Glover in the 15th round of the 1994 Major League Baseball draft. He also played for the Yomiuri Giants of Nippon Professional Baseball and the Sydney Storm of the Australian Baseball League.