The Chacon vs. Limón series was four boxing fights between the American Bobby Chacon (1951–2016) and the Mexican Rafael Limón (born 1954). It was a rivalry that made history in the sport. Many sports historians consider Chacon–Limón to be among boxing's fiercest rivalries, alongside Ali–Frazier, Ali–Norton, Barrera–Morales, Vázquez–R. Márquez, Gatti–Ward, Louis–Schmeling, Durán–De Jesus, Leonard–Durán, Leonard–Hearns and Pacquiao–J.M. Márquez to name a few.