Momo Koseki

Japanese boxer

小関桃

Born

31 July 1982, Mitaka

Citizenship

Japan

Sport

boxing

Discipline

pinweight

Occupation

boxer

Momo Koseki (小関桃, Koseki Momo; born 31 July 1982) is a Japanese former professional boxer. She is a two-weight world champion, having held the WBC female atomweight title from 2008 to 2015; the WBA female atomweight title in 2015; and the WBC female strawweight title in 2017. Koseki made a record-breaking seventeen consecutive title defenses of her WBC atomweight title. Koseki is a member of the International Women's Boxing Hall of Fame.

External links

• Wikipedia
• BoxRec
• Wikidata

Facts from Wikidata Q11464390 (CC0); quoted introduction from English Wikipedia (CC BY-SA 4.0). Data retrieved 2026-10-22.

Data: Wikidata (CC0 1.0); Wikipedia (English) (CC BY-SA 4.0). Retrieved 2026-10-22.