Captain John may refer to:

John Clifton Wright, Capt. John, best selling author of books on America's Great Loop

John Cameron (chief) (1764-1828) a Chief of the Mississauga Nation, known for signing treaties with the Crown

Captain John (Paiute), a Paiute leader at Mono Lake, California

Captain John's Harbour Boat Restaurant, a prominent floating restaurant in Toronto for several decades