Joseph Jerome Cannon (born July 13, 1953) is a former outfielder in Major League Baseball. He grew up in Anne Arundel County in Maryland and was a first round draft pick by the Houston Astros in 1974, Cannon spent parts of four seasons in the majors with the Astros and the Toronto Blue Jays.
Upon his retirement as a player, Cannon became a minor league coach and manager. He managed for 11 seasons in the Toronto, Atlanta, and Houston organizations, taking the Lexington Legends to their only championship in their inaugural season in 2001. His most recent baseball job, 2007-2009, was as the field coach for the Frederick Keys, the Carolina League affiliate of the Baltimore Orioles. In 2015 he was working at the Kentucky Methodist Group Home in Versailles, Kentucky, mentoring teenage boys.
In 1991, Anne Arundel County named Joe Cannon Stadium in Hanover, Maryland after Cannon.
Cannon usually appears on baseball cards as "J.J. Cannon."