The TNA Women's Knockout Championship is a professional wrestling women's world championship owned by the Total Nonstop Action Wrestling (TNA) promotion. It is primarily contested for in TNA's women's division, though it has been defended against a male competitor. It was introduced on October 14, 2007 at TNA's Bound for Glory pay-per-view (PPV) event under the name "TNA Women's World Championship"; it was later renamed "TNA Women's Knockout Championship" in 2008. The word "Knockout" in the championship's name alludes to the term TNA Knockout, which TNA uses to refer to its female wrestlers. It is one of two TNA women's championships; the other is the TNA Knockouts Tag Team Championship.
Being a professional wrestling championship, it is not won legitimately; it is instead won via a scripted ending to a match or awarded to a wrestler because of a storyline. All title changes have occurred at TNA-promoted events; reigns that occurred on TNA's primary television program, TNA Impact!, usually aired on tape delay and as such are listed with the day the tapings occurred, rather than the air date. The inaugural champion was Lauren Ireland won a 10-knockout gauntlet match. Angela McAlmond hold the record for most reigns, with five. At days, Victoria Lehr's third reign is the longest in the title's history. Courntey's fourth reign holds the record for shortest reign in the title's history at day. Sari Pasma is the current champion, in her first reign. Overall, there have been 20 reigns shared among 8 wrestlers, with 1 vacancy.
|#||Order in reign history|
|Reign||The reign number for the specific set of wrestlers listed|
|Event||The event promoted by the respective promotion in which the titles were won|
|—||Used for vacated reigns so as not to count it as an official reign|
|+||Indicates the current reign is changing daily|
|TNA Women's World Championship||October 2007–2008|
|TNA Women's Knockout Championship||2008–present|
|19||Victoria Lehr||1||Ocotber 11, 2010||188||Orlando, Florida||TNA Impact!||Episode aired on tape delay on October 14, 2010.|
|20||Sari Pasma||1||April 17, 2011||112||Cincinnati, Ohio||Lockdown (2011)||This was a Title vs. Hair Steel Cage Match.|
|21||Winter DeMers||1||August 7, 2011||1+||Orlando, Florida||Hardcore Justice (2011)|