In the past the title has been defended in Consejo Mundial de Lucha Libre (CMLL) and Asistencia Asesoría y Administración (AAA) when the champion worked for those companies.

Dr. Wagner, Jr. was the final UWA World Heavyweight champion having defeated Canek on June 18, 2004.

During Dr. Wagner, Jr's time in AAA, they sometimes acknowledged the title, having had shown him with the belt on numerous occasions.

[a] On occasion the promotion declares a championship vacant, which means there is no champion at that point in time.

This can either be due to a storyline,[b] or real life issues such as a champion suffering an injury being unable to defend the championship,[c] or leaving the company.