Lightweight is a weight class in combat sports and rowing.
Notable lightweight boxers include Henry Armstrong, Ken Buchanan, Tony Canzoneri, Pedro Carrasco, Joel Casamayor, Al "Bummy" Davis, Oscar De La Hoya, Roberto Durán, Joe Gans, Artur Grigorian, Benny Leonard, Ray Mancini, Floyd Mayweather Jr., Juan Manuel Márquez, Sugar Shane Mosley, Miguel Ángel González, Carlos Ortiz, Katie Taylor, Edwin Valero, Len Wickwar, Pernell Whitaker, Manny Pacquiao and Ike Williams.
The limit for lightweight generally differs among promotions in bare-knuckle boxing: In World Lethwei Championship, the lightweight division has an upper limit of 60 kg (132 lb).
At the international level, for crew boats, the limits are: For single sculls, the limits are 72.5 kg (159.8 lb) for men and 59 kg (130.1 lb) for women.
Originally, lightweight rowing was a introduced as a category at the 1996 Summer Olympics, due to countries with athletes of smaller average stature competing with an unfair disadvantage, as rowing favors taller athletes who have more leverage.