Marion Harris (April 4 1896 — April 23, 1944) was an American popular singer, most successful in the 1920's. She was the first widely known white singer to sing jazz and blues songs. Born Mary Ellen Harrison, probably in Indiana, she first played vaudeville and movie theaters in Chicago around 1914. Dancer Vernon Castle introduced her to the theater community in New York where she debuted in a 1915 Irving Berlin revue, Stop! Look! Listen!