The TNA X Division Championship is a professional wrestling championship owned by the Total Nonstop Action Wrestling (TNA) professional wrestling promotion. The title was created and debuted on June 19, 2002, at the taping of TNA's second weekly pay-per-view (PPV) event.

Title reigns are determined either by professional wrestling matches between wrestlers involved in pre-existing scripted feuds and storylines, or by scripted circumstances. Wrestlers are portrayed as either villains or heroes as they follow a series of tension-building events, which culminate in a wrestling match or series of matches for the championship. Title changes that happen on episodes of TNA's primary television program, TNA Impact!, air on television two to nine days from the date the match was taped. Changes that happened on weekly PPV events aired either during a live broadcast or aired on taped delay up to seven days apart. The inaugural champion was A.J. Styles, who defeated Low Ki, Jerry Lynn, and Psicosis in a Four Way Double Elimination match on June 19, 2002, at the taping of TNA's second weekly PPV event, which aired on June 26, 2002. Chris Sabin currently holds the record for the most reigns, with ten. At 298 days, Austin Aries' first reign is the longest in the title's history. At less than one day, Eric Young's only reign, Rockstar Spud's second reign, and Sabin's sixth reign are the shortest in the title's history. Overall, there have been 110 reigns shared among 55 wrestlers, with 13 vacancies.

Leon Slater is the current champion in his first reign. He defeated Moose on July 20, 2025 in Elmont, New York at the Slammiversary to win the title.

As of October 26, 2025.