The Shimazu clan ancestors are the venerated forebears of the Shimazu family, a powerful daimyo lineage that ruled the Satsuma domain in southern Kyushu for centuries. As ancestral spirits within Japan's tradition of ancestor veneration, they are honored at shrines and family rites associated with the clan, reflecting beliefs about lineage, continuity, and the protective presence of one's forebears. Some accounts trace the clan's origins to the Kamakura period, though details of its earliest generations remain subject to historical debate.