Christopher Louis Bosio (born April 3, 1963) is an American former professional baseball pitcher and pitching coach. He played in Major League Baseball (MLB) for the Milwaukee Brewers and Seattle Mariners from 1986 to 1996. He was listed at 6 feet 3 inches (1.91 m) and 225 pounds (102 kg), and both threw and batted right-handed. Bosio has served as a pitching coach in MLB for the Brewers, Tampa Bay Devil Rays, Chicago Cubs, and Detroit Tigers.