John MacKay

• Gaelic Athletic Association
• J. Ross Mackay
• Jack McKay (disambiguation)
• John A. Mackay
• John B. McKay
• John Bain Mackay
• John Calder Mackay
• John Calvin MacKay
• John D. Mackay
• John Frederick MacKay
• John George MacKay
• John Henry Mackay
• John Keiller MacKay
• John MacKay (journalist)
• John MacKay, Baron MacKay of Ardbrecknish
• John Mackay (Australian pioneer)
• John Mackay (industrialist)
• John Mackay (poet)
• John Mackay (rugby league)
• John Mackay, 11th of Strathnaver
• John Mackey (disambiguation)
• John McKay (1950s footballer)
• John McKay (American football)
• John McKay (British politician)
• John McKay (MPP)
• John McKay (New Brunswick politician)
• John McKay (Northern Ireland politician)
• John McKay (attorney)
• John McKay (director)
• John McKay (footballer, born 1898)
• John McKay (mathematician)
• John McKay (musician)
• John McKay (pianist)
• John McKay (police officer)
• John McKay (politician)
• John McKay Jr.
• John P. McKay
• John Sturgeon Mackay
• John Victor Mackay
• John William Mackay
• John Yule Mackay