Sir John Hay, 6th Baronet of Smithfield and Haystoun FRSE FSA was a British baronet and politician.
- Occupation
- politician
- Position held
- member of the 12th Parliament of the United Kingdom, member of the 11th Parliament of the United Kingdom, member of the 10th Parliament of the United Kingdom
- Citizenship
- United Kingdom of Great Britain and Ireland, Kingdom of Great Britain
- Born
- August 3, 1788
- Died
- November 1, 1838