Hokuzan (北山, Kunigami: Fukuuzan), also known as Sanhoku (山北) before 18th century, located in the north of Okinawa Island, was one of three independent political entities which controlled Okinawa in the 14th century during Sanzan period. The political entity was identified as a tiny country, a kingdom, or a principality by modern historians, however the ruler of Hokuzan was in fact not "kings" at all, but petty lords with their own retainers owing their direct service, and their own estates.