Lili Chookasian (August 1, 1921 – April 9, 2012) was an American contralto who appeared with many of the world's major symphony orchestras and opera houses. She began her career in the 1940s as a concert singer but did not draw wider acclaim until she began singing opera in her late thirties. She arose as one of the world's leading contraltos during the 1960s and 1970s, and notably had a long and celebrated career at the Metropolitan Opera in New York City from 1962 through 1986. She was admired for her sonorous, focused tone as well as her excellent musicianship. She often chose, against tradition, to sing oratorios from memory.