Tsuyama Castle (津山城 Tsuyama-jō) is a castle in Sange, Tsuyama, Okayama Prefecture, Japan. It had been residence of the government office and lord of Tsuyama Domain (Tsuyama Han) during the Edo period. It was one of Japan's three major hirayama-style castles, along with Himeji Castle and Iyo Matsuyama Castle.