naruto is actually a namikaze( but i dont know if its a clan or just a family) naruto didnt use namikaze because enemy of minato might kill naruto. look how bad ass a namikaze is we know uzumaki's were destroyed because clans from other villages feared their sealing tech but naruto use uzumaki. namikaze is more top priority to obliterate than a uzumaki. its their chance to kill a namikaze child because the one who brings the namikaze name got a flee on sight orders