Macaulay, Macauley, MacAulay, or McAulay may refer to:

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  • Macaulay (surname), an English-language surname with multiple etymological origins (also includes surnames Macauley, MacAulay and McAulay).

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  • Clan MacAulay, a Scottish clan historically seated at Ardincaple Castle, in Scotland.
  • Macaulay family of Lewis, a Scottish family historically centred on Lewis in the Outer Hebrides, in Scotland.

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