John Hackett
John Hackett may refer to:
- Sir John Winthrop Hackett, Irish-born Australian newspaper man and politician
- Sir John Hackett , Australian-born British soldier and author
- John Hackett , Member of Parliament for Mid Tipperary, 1910–1918
- John Hackett , British musician
- John Hackett , American businessman and politician
- John K. Hackett, New York judge and politician
- John Thomas Hackett, Canadian lawyer
- John Francis Hackett, American prelate of the Roman Catholic Church