Tsuchiya clan (土屋氏, Tsuchiya-shi) is a Japanese samurai kin group.
Tsuchiya Masatsugu (1545-1575) was a retainer of the Takeda clan and died at the Battle of Nagashino (1575).
According to "Kansei Choshu Shokafu" (Genealogies of Vassals in Edo Bakufu), Tsuchiya Tadanao (1582-1612), son of Masatsune, at the fall of the Takeda clan, escaped with his mother, and went to Kiyonji Temple in Suruga Province.
According to "Kanei shoka keizuden" and "Kansei-fu" , he was brought up by Acha no tsubone, a concubine of Ieyasu, and served Tokugawa Hidetada as a page.
[2] After the Meiji Restoration, the head of the clan was made a Viscount in the kazoku peerage system.