Elizabeth Cady Stanton Blake (1894-1981) was a portrait painter and arts administrator active in New York City.
Known as Betty, Blake began her study of art at the Art Students League of New York. Her goal was to study with portrait painter Cecilia Beaux, who was convinced by Blake to come out of retirement when Blake offered to form a new class. Blake then directed and managed The Portrait Class, which was held at the Gainsborough Studios, from 1918 to 1927. Largely, the classes were attended by society ladies due to the high ($250) cost of tuition. Due to Beaux's work in Europe, Luis F. Mora taught the class in the early 1920s.
Blake married William Harold Blake in 1927 and together they had a daughter. She died in 1981 in Wareham, Massachusetts.