Frank J. Hayes was an American miner and labor leader who served as president of the United Mine Workers of America (UMWA) from 1917 to 1919. Originally a Socialist, Hayes later joined the Democratic Party and was elected Lieutenant Governor of Colorado in 1936, serving a single two-year term.
- Occupation
- politician, trade unionist
- Position held
- Lieutenant Governor of Colorado, President of the Colorado State Senate
- Citizenship
- United States
- Born
- May 4, 1882
- Died
- June 10, 1948