Beatrice of Falkenburg (c. 1254 – 17 October 1277), also referred to as Beatrix of Valkenburg, was the third spouse of Richard of Cornwall, and as such nominally queen of Germany. She was 15 years old when she married the 60-year-old English prince, who proved to be a very devoted husband. In spite of the difference in their ages, Beatrice survived him by only five years, dying in England aged 23.