{{Short description|Weight class in combat sports}} '''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 {{convert|102|lb|kg}} (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=== {{main|List of world atomweight boxing champions}}

'''Current Champions''' (Last updated on May 19, 2026) {| class="wikitable" !Sanctioning Body !Reign Began !Champion !Record !Defenses |- |WBA |November 21, 2025 |Isabel Rivero |13–3–1 (1 KO) |1 |- |WBC |October 25, 2025 |Camila Zamorano |14–0 (1 KO) |1 |- |IBF |April 7, 2026 |Sumire Yamanaka |10–1 (3 KO) |0 |- |WBO |December 26, 2025 |Gabriela Timar |16–2 (1 KO) |0 |- |}

====Current ''The Ring'' world rankings====

As of May 19, 2026.<ref name=ring-mmw-ratings>{{Cite web|url= https://ringmagazine.com/en/ring-ranking/ring/Women |title=The Ring ratings: atomweight|access-date=19 May 2026}}</ref>

Keys: :{{Color box|gold|C|border=darkgray}} Current ''The Ring'' world champion

{| class="wikitable" !Rank !Name !Record !Title(s) |- |bgcolor=gold|C |{{font color|gray|vacant}} | | |- |1 |Sumire Yamanaka |10–1 (3 KO) |IBF |- |2 |Camila Zamorano |14–0 (1 KO) |WBC |- |3 |Esneidy Rodriguez Olmos |13–0–1 (1 KO) | |- |4 |Shiori Yotsumoto |3–0 (2 KO) | |- |5 |Aldana López |15–0 (0 KO) | |}

===Women's Amateur Champions=== {| class="wikitable" |- ! year !! World !! European |- | 2001 || {{flagicon|Russia}} Elena Sabitova || {{flagicon|FRA}} Oria Mahmoud |- | 2002 || {{flagicon|India}} Mary Kom || |- | 2003 || || {{flagicon|ROM}} Camelia Negrea |- | 2004 || || rowspan="2" | {{flagicon|RUS}} Elena Sabitova |- | 2005 || rowspan="2" | {{flagicon|India}} Mary Kom |- | 2006 || rowspan="2" | {{flagicon|ROM}} Steluta Duta |- | 2007 || |- | 2008 || {{flagicon|India}} Mary Kom || |- | 2009 || || {{flagicon|RUS}} Svetlana Gnevanova |}

==Mixed Martial Arts== {{main|Atomweight (MMA)}} The atomweight division in mixed martial arts generally refers to competitors weighing less than 105 lb.

==See also== {{portal|Martial arts}} * Strawweight * List of current female world boxing champions

==References== {{Reflist}}

==External links== * Coming into effect September 2010: [http://www.aiba.org/documents/site1/docs/AIBA_technical_and_competition_rules_24mar2011_english.pdf AIBA, Technical & Competition Rules 2011, Appendix K] * In effect 2002–August 2010: [https://www.webcitation.org/60fQm0l2l?url=http://www.seftonabc.com/Rules.pdf AIBA, Technical & Competition Rules, Rule VIb]

{{Boxing weight classes}}

Category:Boxing weight classes Category:Women's boxing