Christopher John Carpenter is a starting pitcher in Major League Baseball who has played for the St. Louis Cardinals since 2003, and is currently signed with the team until the 2011 season, with a club option for 2012. Carpenter was 22 years old and a highly-regarded prospect when he broke into the majors in 1997 with the Toronto Blue Jays. He stayed with Toronto until after the 2002 season.

As of 2005, Carpenter resides in Bedford, New Hampshire. He is married to his wife, Alyson. He also has a son and a daughter .