Deacon John may refer to:
Deacon John Moore, New Orleans guitarist and bandleader Deacon John Buffington House, historic house in Swansea, Massachusetts Deacon John Moore House, historic house in Windsor, Connecticut Deacon John Symmes House, historic house in Winchester, Massachusetts Deacon John Troyer (1753–1842), religious figure in the Long Point, Ontario region John Adams Sr. (1691–1761), father of second US president, John Adams John Deacon, the bassist for the band Queen (credited as Deacon John on its debut album)
See also Deacon Jones (disambiguation) John Deacon (disambiguation)