William Mackay or MacKay may refer to:
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William Mackay (artist)
William Andrew Mackay (1876 - July 26, 1939) was an American artist who created a series of murals about the achievements of Theodore Roosevelt. Those three murals, completed in 1936, were installed beneath the rotunda in the Roosevelt Memorial Ha ...
(1876–1939), American artist
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William Andrew MacKay (1929–2013), Canadian lawyer, judge and university president
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William Paton Mackay (1839–1885), Scottish doctor, Presbyterian minister and hymn writer
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William MacKay (politician) (1847–1915), physician and political figure in Nova Scotia
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William Alexander Mackay (1860–1927), Scottish doctor who co-founded Spain's oldest football club, Recreativo de Huelva
See also
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William McKay (disambiguation) William McKay (1772–1832) was a Canadian soldier and administrator.
William or Bill McKay may also refer to:
*William McKay (footballer), Scottish footballer
*William McKay (parliamentary official) (born 1939), British government administrator, ...
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William McKee (disambiguation)
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William McKie (disambiguation)
{{hndis, Mackay, William