Super flyweight, also referred to as junior bantamweight, is a weight class in professional boxing, contested from 112 pounds (51 kg) and up to 115 pounds (52 kg).


The first title match in this division was in 1980, when the World Boxing Council responded to pressure from Asian and Latin American members who felt the difference between the flyweight limit and the bantamweight limit was too significant. Rafael Orono won the inaugural title in February of that year by defeating Seung-Hoon Lee. The World Boxing Association followed suit in 1981 when Gustavo Ballas won the vacant title by knocking out Sok-Chul Baek. The first International Boxing Federation champion was Ju-Do Chun, who won the belt in 1983 with a knockout of Ken Kasugai.

Notable champions in this division have been Ellyas Pical, Gilberto Román, Jiro Watanabe, Moon Sung-kil, Nana Konadu, Mark Johnson, Johnny Tapia, Robert Quiroga, Danny Romero, Vic Darchinyan, Khaosai Galaxy, Samson Dutch Boy Gym, Nonito Donaire, Román González, Carlos Cuadras, Tepparith Singwancha, Naoya Inoue, Omar Andrés Narváez, McJoe Arroyo, Juan Francisco Estrada and Srisaket Sor Rungvisai.

Khaosai Galaxy holds the record for most consecutive title defenses at this division, with 19 defenses of the WBA title.[1]

Current world champions

Main article: List of world super-flyweight boxing champions

Sanctioning body Reign began Champion Record Defenses
WBA June 24, 2023 Kazuto Ioka 30–2–1 (15 KO) 1
WBC December 3, 2022 Juan Francisco Estrada 44–3 (28 KO) 0
IBF February 26, 2022 Fernando Martínez 15–0 (8 KO) 1
WBO Vacant 0

Current The Ring world rankings

As of December 31, 2023.[2]


 C  Current The Ring world champion
Rank Name Record Title(s)
C Juan Francisco Estrada 44–3 (28 KO) WBC
1 Kazuto Ioka 30–2–1 (15 KO) WBA
2 Román González 51–4 (41 KO)
3 Junto Nakatani 26–0 (19 KO) WBO
4 Fernando Martínez 16–0 (9 KO) IBF
5 Kosei Tanaka 19–1 (11 KO)
6 Srisaket Sor Rungvisai 55–6–1 (46 KO)
7 Francisco Rodríguez Jr. 37–6–1 (25 KO)
8 Andrew Moloney 26–3–0–1 (16 KO)
9 Carlos Cuadras 42–5–1 (28 KO)
10 Israel González 28–5–2 (11 KO)


  1. ^ ""เขาทราย แกแล็คซี่" คืนสังเวียน คาดเข็มขัดแชมป์โลกตลอดกาล". prachachat (in Thai). 2012-03-02.
  2. ^ "The Ring ratings: super flyweight/junior bantamweight". Retrieved 31 December 2023.