Atomweight (also referred to as light minimumweight, junior strawweight, junior mini-flyweight and pinweight) is a weight class in combat sports.
Boxing In women's boxing and junior amateur boxing pinweight is, or has been, a weight class for boxers weighing in under (before 2003, 45 kg).
In September 2010 the women's class in amateur boxing was partly merged into an extended 45–48 kg light flyweight division, with women weighing less than 45 kg excluded from competition. Pinweight is still defined for junior contests.
Women's professional champions
Current Champions (Last updated on May 19, 2026) Sanctioning BodyReign BeganChampionRecordDefensesWBANovember 21, 2025Isabel Rivero13–3–1 (1 KO)1WBCOctober 25, 2025Camila Zamorano14–0 (1 KO)1IBFApril 7, 2026Sumire Yamanaka10–1 (3 KO)0WBODecember 26, 2025Gabriela Timar16–2 (1 KO)0
Current The Ring world rankings
As of May 19, 2026.
Keys: Current The Ring world champion
RankNameRecordTitle(s)C1Sumire Yamanaka10–1 (3 KO)IBF2Camila Zamorano14–0 (1 KO)WBC3Esneidy Rodriguez Olmos13–0–1 (1 KO)4Shiori Yotsumoto3–0 (2 KO)5Aldana López15–0 (0 KO)
Women's Amateur Champions year World European 2001 Elena Sabitova Oria Mahmoud 2002 Mary Kom 2003 Camelia Negrea 2004 Elena Sabitova 2005 Mary Kom 2006 Steluta Duta 2007 2008 Mary Kom 2009 Svetlana Gnevanova
Mixed Martial Arts
The atomweight division in mixed martial arts generally refers to competitors weighing less than 105 lb.
See also
Strawweight List of current female world boxing champions
References
External links Coming into effect September 2010: AIBA, Technical & Competition Rules 2011, Appendix K In effect 2002–August 2010: AIBA, Technical & Competition Rules, Rule VIb