Beatrice of Hungary (1290âÂÂ1343 or 1354) was a Dauphine of Viennois by marriage to John II of Viennois.
She was the elder daughter and the second of Charles Martel of Anjou and Klementia of Habsburg's three children, making her a member of the Capetian House of Anjou. Beatrice was thus maternal granddaughter of Rudolf I of Germany and sister of Charles I of Hungary and Clementia of Hungary.
In 1296, when Beatrice was just six years old, she was married to John II of Viennois, who was ten years her senior in Naples. The couple had two sons: Guigues VIII and Humbert II.
When her husband died in 1319, Beatrice became a nun at Cîteaux. She remained here until 1340, when she transferred to the . Her son founded the convent of for her.
Beatrice died in 1343 (or 1354) in the convent her sons had founded for her.