Ronald Isiah Calloway (born September 4, 1976) is an American former baseball outfielder who played two seasons in Major League Baseball with the Montreal Expos. He batted and threw left-handed.
Calloway was selected in the eighth round of the draft by the Arizona Diamondbacks. He played in the Major Leagues for the Montreal Expos from to . Calloway spent the season with the Norfolk Tides, the Triple-A affiliate of the New York Mets and for the Pawtucket Red Sox, the Triple-A affiliate of the Boston Red Sox. Prior to the season, he signed a minor league contract with the Philadelphia Phillies and was assigned to their Triple-A affiliate, the Ottawa Lynx. On May 18, 2007, Calloway announced his retirement.
Calloway attended James Lick High School and graduated in 1994.