Alexander McKay or MacKay may refer to: Alexander McKay (boxer) (1804–1830), Scottish heavyweight bare-knuckle fighter Alexander McKay (politician) (1843–1912), mayor of Hamilton, Ontario, 1886–1887 Alexander Mackay (British Army officer) (1717–1789), British general and Member of Parliament Alexander MacKay (politician) (1818–?), merchant and politician in Nova Scotia, Canada Alexander Gordon McKay (1924–2007), Canadian academic who specialized in Vergilian studies Alexander Murdoch Mackay (1849–1890), Presbyterian missionary to Uganda Alexander MacKay (fur trader) (1770–1811), business associate of fur trader Duncan Cameron Alexander Grant MacKay (1860–1920), Canadian teacher, lawyer and provincial level politician Alexander Mackay (magistrate) (1833–1909), New Zealand farmer, explorer, linguist, magistrate and land court judge Alexander McLellan Mackay (1834–1905), businessman and politician in Newfoundland Alexander McKay (geologist) (1841–1917), New Zealand geologist Alexander McKay (educator) (1841–1917), educator in Nova Scotia Alex MacKay (umpire), American baseball umpire