Haddo (disambiguation)

Haddo is another name for pink salmon. It may also refer to:


 * USS Haddo, two US Navy submarines
 * Haddo, a community in South Dundas, Ontario, Canada
 * Haddo Peak, Alberta, Canada
 * Earl of Haddo, a subsidiary title of the Marquess of Aberdeen and Temair
 * Oliver Haddo, a character (a caricature of Aleister Crowley) in the 1908 novel The Magician by W. Somerset Maugham
 * Oliver Haddo, a pen name used by Aleister Crowley for a critique of the novel, as well as other writings