TNA 1st Anniversary Show (also known as NWA: TNA Anniversary and NWA-TNA PPV #50) was a professional wrestling pay-per-view event produced by Total Nonstop Action Wrestling (TNA), which took place on June 18, 2003 at the TNA Asylum in Nashville, Tennessee. The event commemorated the first anniversary of TNA's first event which took place on June 19, 2002. The event would later become known as Slammiversary in 2005.