Eunice Marya Rosen (born September 6, 1930) is an American bridge player. She is married to fellow bridge champion William Rosen. In 1958 and in 1966, Eunice and Bill won the Master Mixed Teams, now known as the Chicago Mixed Board-a-Match tournament. In 2000, she won the Whitehead Women's Pairs playing with Joan Stein. Her impressive defensive bridge skills became widely regarded in the bridge community, resulting in a write-up in The New York Times column covering one of her remarkable moves.