Alexander McKay

• Alexander McKay , Scottish heavyweight bare-knuckle fighter
• Alexander McKay , mayor of Hamilton, Ontario, 1886-1887
• Alexander Mackay , British general and Member of Parliament
• Alexander MacKay , merchant and politician in Nova Scotia, Canada
• Alexander Gordon McKay, Canadian academic who specialized in Vergilian studies
• Alexander Murdoch Mackay, Presbyterian missionary to Uganda
• Alexander MacKay , business associate of fur trader Duncan Cameron
• Alexander Grant MacKay, Canadian teacher, lawyer and provincial level politician
• Alexander Mackay , New Zealand farmer, explorer, linguist, magistrate and land court judge
• Alexander McLellan Mackay, businessman and politician in Newfoundland
• Alexander McKay , New Zealand geologist
• Alexander McKay , educator in Nova Scotia
• Alex MacKay, American baseball umpire