Total Nonstop Action Wrestling (TNA) is an American professional wrestling promotion founded by Jeff Jarrett and his father Jerry Jarrett in May 2002. The current majority share owner is Panda Energy International. The company, which trades as TNA Entertainment, LLC, operates out of Nashville, Tennessee, with an office in Orlando, Florida.

Upon its formation, TNA was a member of the National Wrestling Alliance, with the company known as NWA Total Nonstop Action. TNA was granted exclusive rights to both the NWA World Heavyweight Championship and the NWA World Tag Team Championship. TNA withdrew from the NWA in 2004, but was permitted to continue to use the championships until the NWA abrogated the agreement in May 2007.

TNA is the first American promotion to exclusively use a hexagonal wrestling ring as opposed to the more conventional four-sided ring. The organization also employs the unconventional rule that a championship can change hands as the result of a disqualification or countout. In addition, two separate entrance ramps are used for heels and faces.

Like its competitor WWE, TNA is also currently under investigation by the United States House Committee on Oversight and Government Reform regarding their talent wellness policy, after the death of WWE's Chris Benoit possibly being linked to steroid abuse. In September 2007, TNA announced to its talent that they would be having their first drug test. TNA told its talent that if they will not be able to pass the test to tell management ahead of time. It is not known whether failing the test will result in a suspension.