Gustavus Hamilton, 1st Viscount Boyne PC (Ire) (1642–1723) was an Irish soldier and politician. In his youth, he fought in his cousin Sir George Hamilton's regiment for the French in the Franco-Dutch War. About 1678 he obtained a commission in the Irish Army. James II appointed him to the Irish Privy Council in 1685.
- Occupation
- military officer, politician
- Position held
- Member of Parliament in the Parliament of Ireland, Member of the Privy Council of Ireland
- Born
- 1642
- Died
- September 16, 1723
