IWA Undisputed World Heavyweight Championship (Puerto Rico)

The IWA Undisputed World Heavyweight Championship is a professional wrestling world heavyweight championship that is contested in the International Wrestling Association's main branch at Puerto Rico. Besides its base jurisdiction, the title has also been defended within the international circuit and interpromotially at Frontier Martial-Arts Wrestling (Japan) and Revolution X-treme Wrestling (Panama).

The championship was established in 2000, changing its name eight years later to reflect the status of undisputed championship that the National Wrestling Alliance recognized following a controversial "unification" match where (another title born with the NWA as sanctioning body) the WWC Universal Heavyweight Championship was purportedly on the line. When reintroduced in 2018, this distinction had been dropped from the name.

In 2021, Fernando Tonos and Manny Ferno created a group known as La Alianza IWE with the intention of completing a hostile takeover on behalf of International Wrestling Entertainment. Members of the stable won all of the IWA-PR titles. In response, general manager Chicky Starr and Savio Vega introduced parallel titles for each division in March 2022. While the storyline continued, there was a pair of belts contested independently of each other, with the original being referenced to as the "IWE World Heavyweight Championship". On November 19, 2022, John Hawking defeated Mr. Big to unify both titles, reintroducing the name "IWA Undisputed World Heavyweight Championship".