Don John may refer to:
People
- John of Austria (1547–1578), Habsburg admiral
- John of Austria the Younger (1629–1679), Habsburg general
Other uses
- Don John (horse), a British Thoroughbred racehorse
- Don John, a character in Much Ado About Nothing
- Don John, an 1882 novel by Jean Ingelow
- Don John, a character in the animated series Adventure Time
See also
- Don Jon, a 2013 film
- The Jester Don John of Austria, a 1633 portrait by Diego Velázquez
- Donjon (disambiguation)
- Donald John (disambiguation)
- Don Juan (disambiguation)