Flyweight

Flyweight is a class in boxing which includes fighters weighing up to and including 51 kg (112 lb) for a title fight.

Professional boxing

The flyweight division was the last of boxing's eight traditional weight classes to be established. Before 1909, anyone below featherweight was considered a bantamweight, regardless of how small the boxer. In 1911, the organization that eventually became the British Boxing Board of Control held a match that crowned Sid Smith as the first flyweight champion of the world. Jimmy Wilde, who reigned from 1916 to 1923, was the first fighter recognized both in Britain and the United States as a flyweight champion.

Other notable flyweights include Victor Perez, Pancho Villa, Walter McGowan, Pascual Pérez, Pone Kingpetch, Fighting Harada, Masao Ohba, Chartchai Chionoi, Efren Torres, Erbito Salavarria, Miguel Canto, Dave McAuley, Charlie Magri, Gabriel Bernal, Santos Laciar, Sot Chitalada, Yong-Kang Kim, Yuri Arbachakov, Danny Romero, Mark "Too Sharp" Johnson, Manny Pacquiao, Jorge Arce, Vic Darchinyan, Nonito Donaire, Omar Andrés Narváez, Pongsaklek Wonjongkam, Amnat Ruenroeng, Román González, McWilliams Arroyo, Donnie Nietes, Nicola Adams.

Current world champions

Current The Ring world rankings

As of June 20, 2023.

Keys:

 C  Current The Ring world champion

Longest reigning world flyweight champions

Below is a list of longest reigning flyweight champions in boxing measured by the individual's longest reign. Career total time as champion (for multiple time champions) does not apply.

Amateur boxing

Olympic Champions

Men's

Women's

Pan American Champions

Men's

In kickboxing, a flyweight fighter generally weighs 53 kg (116 lb) or under. The International Kickboxing Federation (IKF) Flyweight division (professional and amateur) is 112.1 lb. – 117 lb. or 50.95 kg – 53.18 kg.

In ONE Championship, the flyweight division is up to 61.2 kg (135 lb).

The limit for flyweight generally differs among promotions in bare knuckle boxing:

• In Bare Knuckle Fighting Championship, the flyweight division has an upper limit of 125 lb (57 kg).
• In BKB™, the flyweight division has an upper limit of 70 kg (154 lb).

The flyweight division in mixed martial arts – as defined by the Nevada State Athletic Commission combat sports doctrine and by the Association of Boxing Commissions – groups together all competitors 125 lb (57 kg) and below. It sits between Strawweight (106 lb-115 lb) and Bantamweight (126 lb-135lb).

The flyweight division in mixed martial arts refers to a number of different weight classes:

• The UFC's flyweight division, which groups competitors within 116 to 125 lb (53 to 57 kg)
• The Pancrase light flyweight division with an upper limit of 54 kg (119 lb)
• The Shooto flyweight division with an upper limit of 114.6 lb (52 kg)
• The ONE Championship's flyweight division, with upper limit at 61.2 kg (134.9 lb)
• The Road FC's flyweight division, with upper limit at 125 lb (57 kg)

Professional champions

These tables are not always up to date. Last updated on July 8, 2023.

Men:

Organization	Reign Began	Champion	Record	Defenses
UFC	July 8, 2023	Alexandre Pantoja	27-5 (8KO 10SUB)	1
Bellator MMA	N/A	Vacant	N/A	N/A
ONE Championship	August 27, 2022	Demetrious Johnson	25-4-1 (5KO 8SUB)	1
Rizin FF	December 31, 2023	Kyoji Horiguchi	32-5 (1) (15KO 5SUB)	0
Fight Nights Global	N/A	Vacant	N/A	N/A
ACA	February 25, 2023	Kurban Gadzhiev	19-3 (5KO 6SUB)	0
CWFC	December 31, 2022	Shajidul Haque	15-5 (5KO)	0
Legacy Fighting Alliance	June 23, 2023	Cody Davis	8-1 (1KO 3SUB)	0

Women:

Organization	Reign Began	Champion	Record	Defenses
UFC	March 4, 2023	Alexa Grasso	16-3-1 (4KO 2SUB)	1
Bellator MMA	April 22, 2022	Liz Carmouche	20-7 (9KO 5SUB)	3
Invicta FC	N/A	Vacant	N/A	N/A
KSW	N/A	Vacant	N/A	N/A
Legacy Fighting Alliance	N/A	Vacant	N/A	N/A

• List of current MMA Flyweight Champions
• List of Road FC Flyweight Champions
• List of current MMA Women's Flyweight Champions