William George Hay, 18th Earl of Erroll, KT, GCH, PC, styled Lord Hay between 1815 and 1819, was a Scottish peer and politician.
- Occupation
- politician
- Position held
- member of the House of Lords, Member of the Privy Council of the United Kingdom, Rector of Marischal College, Aberdeen, Master of the Buckhounds
- Citizenship
- United Kingdom of Great Britain and Ireland
- Born
- February 21, 1801
- Died
- April 19, 1846
