The lightweight division is over 130 pounds (59 kilograms) and up to 135 pounds (61.2 kilograms) weight class in the sport of boxing. Notable lightweight boxers Katie Taylor, Alexis Argüello, Henry Armstrong, Ken Buchanan, Tony Canzoneri, Pedro Carrasco, Joel Casamayor, Al "Bummy" Davis, Oscar De La Hoya, Roberto Durán, Artur Grigorian, Joe Gans, Benny Leonard, Ray Mancini, Floyd Mayweather Jr., Juan Manuel Marquez, Sugar Shane Mosley, Miguel Ángel González, Carlos Ortiz, Edwin Valero, Pernell Whitaker, Manny Pacquiao, and Ike Williams.
|Sanctioning body||Reign began||Champion||Record||Defenses|
|WBA||May 12, 2018||Vasyl Lomachenko||14-1 (10 KO)||3|
|WBC||August 31, 2019||Vasyl Lomachenko||14-1 (10 KO)||0|
|IBF||February 2, 2019||Richard Commey||29-2 (26 KO)||1|
|WBO||December 8, 2018||Vasyl Lomachenko||14-1 (10 KO)||2|
Below is a list of "longest reigning lightweight champions" career time as champion (for multiple time champions) does not apply.
|Name||Title Reign||Title recognition||Successful defenses|
|1.||Benny Leonard||7 years, 7 months, 17 days||World||7|
|2.||Artur Grigorian||7 years, 6 months, 20 days||WBO||17|
|3.||Jack McAuliffe||6 years, 7 months, 12 days||World||3|
|4.||Roberto Durán||6 years, 7 months, 5 days||WBA||12|
|5.||Ike Williams||6 years, 1 month, 7 days||World||5|
|6.||Joe Gans||6 years, 27 days||World||10|
|7.||Joe Brown (boxer)||5 years, 7 months, 27 days||World||11|
|8.||Miguel Vazquez||4 years, 29 days||IBF||6|
|9.||Sammy Mandel||4 years, 14 days||NBA||2|
|10.||Paul Spadafora||3 years, 10 months||IBF||7|
Pan American Champions
International Kickboxing Federation (IKF) Lightweight (Pro & Amateur) 127.1 lb - 132 lb or 57.77 kg - 60 kg. Women's divisions also use this weight class, but usually at a lower weight than the men's divisions. In Glory promotion, a lightweight division is up to 70 kg (154 lb).
In MMA, the lightweight division is from 146 lb (66 kg) to 155 lb (70 kg).
Lightweight rowing was a category entered into the Olympic sport, originally due to countries of smaller stature competing with an unfair disadvantage, as rowing favors the taller athlete who has more leverage.
Current Olympic class lightweight events in rowing are a men's lightweight Double Scull, and a women's lightweight Double Scull.