Michael 'Bo' Kelly (born June 27, 1972) is a retired arena football player who was a fullback/linebacker in the Arena Football League (AFL) for twelve seasons during the 1990s and 2000s. Kelly played college football for East Texas State University. He played professionally for the Arizona Rattlers and Carolina Cobras of the AFL. During his long professional career, he became the AFL's all-time rushing leader, breaking the record formerly held by Bob McMillen, (later broken by Derrick Ross in 2013) and played for one ArenaBowl-winning Arizona Rattler team.