Homer Stille Cummings (April 30, 1870 – September 10, 1956) was an American lawyer and politician who was the United States attorney general from 1933 to 1939. He also was elected mayor of Stamford, Connecticut, three times before founding the legal firm of Cummings & Lockwood in 1909. He served as chairman of Democratic National Committee between 1919 and 1920.