was a Japanese samurai of the Sengoku period and the 5th daimyo (lord) of the Katahara branch of the Matsudaira clan, which was based in Katahara Castle, Mikawa province (the ruins of the castle are in what is now Gamagōri, Aichi). Ietada was also known as Matsudaira Matashichiro, and had the nickname Kii no kami, or "The Defender of Kii" (紀伊守).