Mona Elly Hou Vangsaae (24 April 1920 – 17 May 1983) was a Danish ballet dancer, choreographer and instructor. At the Royal Danish Theatre, thanks to her excellent technique and dramatic versatility she became a soloist in 1942, taking roles in Bournonville's productions and in works by the Danish choreographers Nini Theilade and Harald Lander. The roles of Julie in Frederick Ashton's Romeo and Juliet and Aili in Birgit Cullberg's The Moon Reindeer were created for her. After retiring from the stage in 1962, she became an instructor for Bournonville's ballets together with her son Peter Schaufuss.