- Japanese: 龍造寺家 (Ryuuzouji-ke)
The Ryûzôji of Hizen province may have been descended from Fujiwara Hidesato. They were retainers of the Shôni family until Ryûzôji Takanobu overthrew them in 1553. While Takanobu was able to secure most of Hizen Province, his defeat and death at Okitanawate in 1584 greatly weakened his clan and they were effectively supplanted by the Nabeshima.