Sugaya Yakata (菅谷館) was a Japanese castle located in what is now the town of Ranzan, Hiki District, Saitama, Japan.

Details of the origins of the castle are uncertain and tradition holds that it was originally the fortified residence of Hatakeyama Shigetada (1164-1205), an important retainer of Minamoto no Yoritomo and chieftain of the Hatakeyama clan but no relics from that period have been found in archaeological excavations.

[2][3] During the Sengoku period, the area surrounding Sugaya Castle was contested between the Ogigyastsu branch of the Uesugi clan (who held Sagami province and eastern Musashi Province) and the Yamanouchi-branch of the Uesugi clan, who held northern Musashi and the prestigious title of Kantō kanrei.

With the destruction of the Hōjō at the hands of Toyotomi Hideyoshi in 1590, and the subsequent transfer of the Kantō region to Tokugawa Ieyasu, Sugata Yakata was abandoned and fell into ruins.

[6] The castle site is a 15 minute walk from Musashi-Ranzan Station on the Tōbu Tōjō Line.