Gustavus Hamilton, 2nd Viscount Boyne

Gustavus Hamilton, 2nd Viscount Boyne PC (Ire) (1710 – 18 April 1746) was an Irish peer and politician.

He was the oldest son of Hon. Frederick Hamilton, oldest son of Gustavus Hamilton, 1st Viscount Boyne, and his wife Sophia Hamilton, daughter of James Hamilton. His uncles were Gustavus Hamilton and Henry Hamilton. After his father's death in 1715, he was taken to London by his mother and was educated at Westminster School. In 1723, he succeeded his grandfather as viscount, and in 1736, he was sworn of the Privy Council of Ireland. In the latter year, he entered the British House of Commons for Newport (Isle of Wight) and sat as Member of Parliament for the constituency until 1741. In 1737, he was appointed a Commissioner of the Irish Revenue and held this post until his death in 1746.

Boyne died unmarried and was buried at Stackallen. His cousin Frederick Hamilton succeeded to the viscountcy.