Matsudaira Tadateru (松平 忠輝, February 16, 1592 – August 24, 1683) was a daimyō during the Edo period of Japan. He was the sixth son of Tokugawa Ieyasu. He was born in Edo Castle during the year of the dragon (tatsu), and as a child his name was Tatsuchiyo (辰千代). His mother was Lady Chaa (茶阿局, Chaa no Tsubone), a concubine of Ieyasu. Ieyasu sent the boy to live with a vassal, Minagawa Hiroteru, daimyō of the in Shimotsuke Province.