The Cosmopolitan Club is a private social club on the Upper East Side of Manhattan, New York City, New York, USA. Located at 122 East 66th Street, east of Park Avenue, it was founded as a women's club. Members have included Willa Cather, Ellen Glasgow, Eleanor Roosevelt, Jean Stafford, Helen Hayes, Pearl Buck, Marian Anderson, Margaret Mead, and Abby Aldrich Rockefeller.