Edith Rockefeller McCormick (August 31, 1872–1932) was an American socialite and opera patron. McCormick was the fourth daughter of Standard Oil tycoon John D. Rockefeller (1839–1937) and his wife Laura Spelman Rockefeller ("Cettie") (1839–1915). Her famous younger brother was John D. Rockefeller, Jr.. McCormick and her father had an often stormy relationship, where her extravagance would often conflict with his known frugality.

She married Harold Fowler McCormick (May 2, 1872 -), a son of Chicago's mechanical reaper inventor Cyrus McCormick, in 1895. The married couple spent their first 2 years living in Council Bluffs, Iowa. They later moved to Chicago. Her country retreat, located directly on Lake Michigan in Lake Forest, Illinois, named Villa Turicum, was famous for its ostentatious scale, and extensive gardens.

A famous story about McCormick involves an evening in 1901 during a party. News arrived that McCormick's son, John Rockefeller McCormick, had died of scarlet fever. This was whispered to her at the dinner table; she proceeded to merely nod her head and allowed the party to continue without incident.