The Zero1 USA World Junior Heavyweight Championship is a title defended in Pro Wrestling Zero1's American affiliate Zero1 USA. The title was previously defended in the Midwest territory of the National Wrestling Alliance as the NWA Midwest X Division Championship until 2011 when NWA Midwest disbanded following the stripping of Almighty Sheik (chairman of the territory) of the NWA Worlds Heavyweight Championship by NWA president Robert Trobich.