John Clifford may refer to:

• John Clifford, 7th Baron Clifford (1389–1422), also 7th Lord of Skipton
• John Clifford, 9th Baron Clifford (1435–1461), also 9th Lord of Skipton, Lancastrian military leader during the Wars of the Roses
• John H. Clifford (1809–1876), Governor of Massachusetts
• John Clifford (minister) (1836–1923), British nonconformist minister and politician
• J. R. Clifford or John Robert Clifford (1848–1933), West Virginian African-American attorney
• John David Clifford Jr. (1887–1956), United States District Judge for the District of Maine
• John R. Clifford (fl. from 1985), American veterinarian
• John Clifford (choreographer) (fl. from 1976)
• Johnny Clifford (1934–2007), Irish hurler

• All pages with titles beginning with John Clifford