Longest reigning boxing world champion (female)

According to Official Guinness Records,

The longest reigning female boxing world champion is Momo Koseki (Japan), who became the WBC Atomweight Champion on 11 August 2008 and had kept the reign for 8 years 92 days as of 11 November 2016.Atomweight (also known as pinweight or light minimumwieght) is a weight class for female boxers under 46 kg (102 lb) – lighter than the majority of female fashion models. Momo Koseki has so far defended her title 17 times. According to her manager, it is becoming difficult to find anyone who is willing to face her in the ring.

For a complete list of 2016 records, please visit 2016 Guinness Records in Japan.

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