Middleweight
| No. | Name | Date | Defenses |
|---|---|---|---|
| 1 |  Claressa Shields (def. Christina Hammer ) | April 13, 2019 – present | 2 |
Boxing magazine The Ring has awarded world championships in men's professional boxing within each weight class from its foundation in 1922 until the 1990s, and again since 2001. In 2019 they began awarding world championships to women, however, the publication did not begin producing monthly female divisional rankings until August 2020.
| Current champion | |
| Most consecutive title defenses | |
| No. | Name | Date | Defenses |
|---|---|---|---|
| 1 | Claressa Shields (def. Christina Hammer ) | April 13, 2019 – present | 2 |
| No. | Name | Date | Defenses |
|---|---|---|---|
| 1 | Claressa Shields (def. Marie-Eve Dicaire ) | March 5, 2021 – present | 0 |
| No. | Name | Date | Defenses |
|---|---|---|---|
| 1 | Jessica jh (def. Cecilia Brækhus ) | March 13, 2021 – present | 2 |
| No. | Name | Date 2 | Defenses |
|---|---|---|---|
| 1 |  Chantelle Cameron (def. Mary McGee ) | October 30, 2021 – present | 0 |
| 2 | Chantelle Cameron (def. Katie Taylor ) | May 20, 2023 – present | 1 |
| No. | Name | Date | Defenses |
|---|---|---|---|
| 1 |  Katie Taylor (def. Delfine Persoon ) | 1 June 2019 – present | 7 |
| No. | Name | Date | Defenses |
|---|---|---|---|
| 1 | Marlen Esparza (def. Naoko Fujioka ) | 9 April 2022 – present | 0 |
The Ring is an American boxing magazine that was first published in 1922 as a boxing and wrestling magazine. As the sporting legitimacy of professional wrestling came more into question, The Ring shifted to becoming exclusively a boxing-oriented publication. The magazine is currently owned by Oscar De La Hoya's Golden Boy Enterprises division of Golden Boy Promotions, which acquired it in 2007. Ring began publishing annual ratings of boxers in 1924.
Nathaniel Stanley Fleischer was a noted American boxing writer and collector.
Mini flyweight, also known as strawweight, minimumweight or super atomweight, is a weight class in combat sports.
Light middleweight, also known as junior middleweight or super welterweight, is a weight class in combat sports.
In professional boxing, the undisputed champion of a weight class is the boxer who holds world titles from all of the major sanctioning organisations simultaneously. There are currently four major sanctioning bodies: WBA, WBC, IBF and WBO. There were many undisputed champions before the number of major sanctioning bodies increased to four in 2007, but there have only been 13 boxers to hold all four titles simultaneously. As of January 2023, Canelo Álvarez, Jermell Charlo and Devin Haney are undisputed champions in the super middleweight, light middleweight and lightweight divisions respectively.
The following tables show the professional boxers listed in the latest top-10 pound for pound world rankings published by each of:
Light welterweight, also known as junior welterweight or super lightweight, is a weight class in combat sports.
A championship belt is a large, extravagantly designed belt used primarily in combat sports such as boxing, mixed martial arts, and professional wrestling to signify the champions of the promotion or company, much like a cup or trophy in other sports. There are several companies in the business of constructing championship belts.
In combat sports where champions are decided by a challenge, the lineal championship of a weight class is a world championship title held initially by an undisputed champion and subsequently by a fighter who defeats the reigning champion in a match at that weight class. In professional boxing, the lineal champion is informally called "the man who beat the man".
Cecilia Carmen Linda Brækhus is a Norwegian professional boxer and former kickboxer. In boxing she reigned as the undisputed female welterweight champion from 2014 to 2020, and is the first woman in any weight class to hold the WBA, WBC, IBF and WBO titles simultaneously. She is also one of only 11 boxers in history, female or male, to hold all four major world titles simultaneously. In 2017, the Boxing Writers Association of America named Brækhus their inaugural Female Fighter of the Year. Guinness World Records awarded her with three recognitions in 2018: the Longest Reigning Female Boxing Champion, the Longest Reign as a Four-Belt Undisputed Boxing Champion, and the Most Bouts Undefeated by a Female World Champion Boxer. As of September 2020, she is ranked as the world's second best active female welterweight by The Ring and BoxRec, and the third best active female, pound-for-pound, by The Ring, fifth by ESPN, and sixth BoxRec.
Below is a list of world heavyweight boxing championship records and statistics.
