Donald Mackay

Donald Mackay, MacKay, or McKay may refer to:

Politics and government

Donald McKay (politician) (1836–1895), Canadian politician
Donald Mackay, 11th Lord Reay (1839–1921), Dutch-born British administrator and Liberal politician
Donald McDonald Mackay (1845–1904), Australian politician

Donald W. MacKay (1874–1952), Canadian politician
Donald Morrison MacKay (1889–1953), Canadian politician
Donald Brenham McKay, former mayor of Tampa, Florida
Don McKay (politician) (1908–1988), New Zealand politician
Donald Hugh Mackay (1914–1979), mayor of Calgary, Alberta
Donald Mackay (anti-drugs campaigner) (1933–1977), Australian politician and anti-drugs campaigner
Donald Mackay, Baron Mackay of Drumadoon (1946–2018), Scottish judge

Donald Mackay, 5th of Strathnaver (died 1370), chief of the ancient Clan Mackay
Donald Mackay, 11th of Strathnaver (died 1550), chief of the ancient Clan Mackay
Donald Mackay, 1st Lord Reay (1591–1649), Scottish peer and soldier
Donald Mackay (fur trader) (1753–1833), Canadian trader with the North West Company
Donald Mackay (Royal Navy officer) (1780–1850), British admiral
Donald McKay (1810–1880), Canadian-American shipbuilder
- MS Donald McKay (1938) one of the first C2 ships
Donald McKay (scout) (1836–1899), American scout, actor, and spokesman
Donald MacKay (architect) (c. 1846 – c. 1887), Scottish-American architect

Donald Cameron MacKay (1906–1979), Canadian maritime artist
Donald A. Mackay (1914–2005), American illustrator
Donald McKay (RAF officer) (1917–1959), British flying ace of the Second World War
Donald MacCrimmon MacKay (1922–1987), Scottish physicist
Donald Mackay (scientist) (1936–2023), Scottish-born Canadian scientist of environmental chemistry
Donald Mackay (medical doctor) (died 1981)