Champions
| Champion | Won | Lost | Days |
|---|---|---|---|
| Valentina Shevchenko | 14 Sept 2024 | Current | 766 |
| Alexa Grasso | 4 Mar 2023 | 14 Sept 2024 | 560 |
| Valentina Shevchenko | 8 Jun 2019 | 4 Mar 2023 | 1,365 |
Built from title bouts on record. Vacated or stripped titles are not visible in bout results, so very recent changes can lag.