John Cavendish (disambiguation)
John Cavendish (1346–1381) was a British nobleman and politician.
John Cavendish may also refer to:
- John Cavendish, 5th Baron Chesham (1916–1989), British Conservative politician
 - Lord John Cavendish (1732–1796), English politician
 - Jonathan Cavendish, producer of films such as Bridget Jones's Diary