John MacKay, Mackay, or McKay may refer to:
Arts and entertainment
- John Mackay (poet) (1656âÂÂ1754), Scottish Gaelic poet known as Am Pìobaire Dall
- John Henry Mackay (1864âÂÂ1933), Scottish writer, anarchist, thinker and homosexual activist
- John Victor Mackay (1891âÂÂ1945), American art director
- John D. Mackay (1909âÂÂ1970), Orcadian schoolteacher
- John P. McKay (died 2022), American historian and professor, author of A History of Western Society
- John McKay (pianist) (born 1938), Canadian-American pianist
- John McKay (guitarist) (born 1958), British guitarist and former member of Siouxsie & the Banshees
- John McKay (director) (born 1965), British film and television director
Business
Military and public service
Politics
- John McKay (Ontario politician, born 1841) (1841âÂÂ1918), Ontario physician and political figure
- John McKay (English politician) (1883âÂÂ1964), British Labour Party MP for Wallsend, 1945âÂÂ1964
- John Keiller MacKay (1888âÂÂ1970), 19th Lieutenant Governor of Ontario, Canada, 1957âÂÂ1963
- John George MacKay (1893âÂÂ1974), farmer and political figure on Prince Edward Island
- William John MacKay (fl. 1929âÂÂ1934), Ontario politician
- John P. MacKay (fl. 1937âÂÂ1943), Ontario politician
- John MacKay, Baron MacKay of Ardbrecknish (1938âÂÂ2001), Scottish Conservative Member of Parliament for Argyll, 1979âÂÂ1987
- John McKay (Northern Ireland politician) (born 1945), member of the Northern Ireland Constitutional Convention
- John McKay (New Brunswick politician) (born 1948), former Speaker of the Legislative Assembly of New Brunswick and mayor of Miramichi, New Brunswick
- John McKay (Ontario politician, born 1948) (born 1948), member of the Canadian parliament
Science
Sports
- John Sutherland Mackay (1848âÂÂ1924), Scottish medical doctor and president of Rio Tinto FC
- John McKay (1850âÂÂ1916), co-founder of the Gaelic Athletic Association
- John McKay (footballer, born 1898) (1898âÂÂ?), Scottish footballer
- John McKay (American football) (1923âÂÂ2001), American football coach
- John McKay (1950s footballer), Scottish footballer
- John Mackay (cricketer) (born 1937), Australian cricketer
- J. K. McKay (John Kenneth McKay, born 1953), American football wide receiver
- John Mackay (rugby league) (born 1956), Australian rugby league player
Others
See also