The NWA 73rd Anniversary Show (also simply known as NWA 73) was a professional wrestling pay-per-view event produced by the National Wrestling Alliance (NWA) that was held on August 29, 2021, as the second of two PPV events to take place from the Khorassan Ballroom of the Chase Park Plaza in St. Louis, Missouri. The event was broadcast on FITE TV. It is the eleventh event in the NWA Anniversary Show chronology, and the first since the 70th Anniversary in 2018.