John Clifford (disambiguation)
John Clifford is the name of the following people:
- John Clifford (1836–1923), British Baptist pastor
- John Clifford, 7th Baron de Clifford (around 1388–1422), English nobleman and politician
- John Clifford, 9th Baron de Clifford (1435–1461), English nobleman
- John David Clifford (1887–1956), American lawyer and politician
- John H. Clifford (1809–1876), American politician