The former Imperial Family is the colloquial term of Imperial Family members who ceased to be a member of the Imperial Family in 1947, consisted of 51 members of 11 Miyake (house of an imperial prince) and their male descendants.
旧皇族（きゅうこうぞく）とは、1947年（昭和22年）に皇籍離脱した11宮家51名の皇族及びその男系子孫を指す俗称である。