John Hay (disambiguation)
John Hay was an American politician; Secretary of State 1898–1905.
John Hay may also refer to:
- John Hay, 1st Lord Hay of Yester
- John Hay, 2nd Lord Hay of Yester, Scottish nobleman
- John Hay (Jesuit), Jesuit scholar and educator
- John Hay, 1st Earl of Tweeddale, Scottish aristocrat
- John Hay, 1st Marquess of Tweeddale, Lord Chancellor of Scotland
- John Hay, 2nd Marquess of Tweeddale, Scottish nobleman
- John Hay, 4th Marquess of Tweeddale, Scottish nobleman
- John Hay, 12th Earl of Erroll, Scottish nobleman
- John Hay of Cromlix, Jacobite noble
- John Hay (moderator), Scottish minister
- John Hay (academic), Australian academic
- John Hay (Canadian politician), Canadian politician
- John Hay (cardiologist), Liverpool physician
- John Hay (director), English film director
- John Hay (footballer), Scottish footballer
- John Hay (Henley MP), British Conservative Party politician, Member of Parliament
- John Hay (nature writer), American author
- John Hay (New [South Wales politician)], Australian politician from New South Wales
- John B. Hay, American politician from Illinois
- John H. Hay, U.S. Army general
- John Hay Drummond Hay, British diplomat
- John Le Hay, Irish-born singer and actor
- John MacDougall Hay, Scottish novelist
- John Primrose Hay, British Member of Parliament for Glasgow Cathcart, 1922–1923
- Sir John Hay, 6th Baronet, British baronet and Member of Parliament
- Sir John Hay of Alderston, 1st Baronet
- Sir John Hay of Lands and Barra, "The Incendiary" Lord Provost of Edinburgh 1637–38
- Sir John Dalrymple-Hay, 3rd Baronet, British admiral and Conservative Member of Parliament
- John Hay (priest), Dean of Raphoe from 2003 to 2013
- SS John Hay, a Liberty ship