Catherine of Hanau also known as Katharina (25 January 1408 – 25 September 1460) was a German regent. She was the regent of the County of Rieneck during the minority of her son from 1431 until 1434. She was the eldest daughter of Reinhard II, who would become the first Count of Hanau in 1429, and Catherine of Nassau-Beilstein (d. 6 September 1459).