Following the name of the champion(s): Indicates the number of times the competitor has held that title at that point.
[...]
Indicates a gap in the listing where title changes are not known.
<
Title was held or changed hands no later than this. In these cases, it is known that a competitor held the title at a certain time but not when he/she won it.
@
Order uncertain. Different titleholders may be known for the same year, for example, but it is not known who held the title before whom.
#
Unofficial or disputable claims. These are usually matches that certainly took place, but where there is doubt that the competitor shown should be recognized as a true title holder. These listings are also italicized.
International Boxing Organization
Female World Welterweight Title (as of 2025-03-07)
* Bolded letters in the competitor's name, if any, indicate the surname/family name.
Jennifer Retzke
2014-08-03
Mitte, BE, GER
Defeats Florence Muthoni to become first champion; has fought Muthoni on 13-08-03 for the vacant title to a draw; stripped of the title on 14-11-29 when Retzke loses her bid for WBA, WBC, IBF, and WBO world titles against Cecilia Brækhus on 14-11-29.
Cecilia Brækhus
2016-02-27
Halle, NW, GER
Defeats Chris Namus; also holds WBA, WBC, IBF, and WBO world titles (or may be given the recognition after defeating Jennifer Retzke on 14-11-29?).
Jessica McCaskill
2020-08-15
Tulsa, OK, USA
Wins IBO, WBA, WBC, IBF, and WBO world titles; stripped of the IBF title after losing her bids to the undisputed world junior welterweight title on 22-11-05; WBO title is declared vacant in 23-02; vacates WBC title in 24-03 after refusing to fight mandatory challenger Ivana Habazin on 24-04-20.
Lauren Price
2024-05-11
Cardiff, WEL, GBR
Wins IBO and WBA world titles; also wins WBC and IBF world titles on 25-03-07.
