George Alexander Hamilton (29 August 1802 – 17 September 1871) was a minor British Conservative Party politician and later a prominent civil servant.

Hamilton was subsequently elected one of the MPs for Dublin University at a by-election on 10 February 1843 and continued to represent the seat until he resigned in January 1859.

At the general election in 1826 he became a candidate for the constituency of Dublin City, but after a severe and expensive contest lasting fourteen days was defeated by a small majority.

In the following year, 1837, he again contested Dublin unsuccessfully, and although in presenting a petition he was supported by "the Protestants of England", and a sum of money known as the Spottiswoode subscription was raised to assist him in paying his expenses, O'Connell on this occasion retained his seat.

In parliament he was chiefly known as having presented the petition of the celebrated Protestant meeting of 14 January 1837, which gave rise to much discussion and subsequently to the Earl of Roden's committee of inquiry.

He was sworn a member of the Privy Council of the United Kingdom on 7 August 1869, and in the following year was named one of the Commissioners of the Church Temporalities in Ireland.

During the Great Irish famine he chaired the Relief Committee in the Balrothery Union of parishes which provided soup, bread and meal to the starving throughout the North Fingal area.

He died in Kingstown (now Dún Laoghaire, Ireland), on 17 September 1871 and was buried in St George's church, Balbriggan.

Despite his lifelong advocacy of unionism, the last few miles of the journey to his burial were lined by thousands of grieving Roman Catholics and he received a laudatory obituary in the Nationalist Freeman's Journal.

His father-in-law (whose family were originally from Bremen) had a distinguished career in the Colonial Civil Service, and became Deputy British Resident at Poona.