The Queen's University of Belfast, commonly known as Queen's University Belfast, is a public research university in Belfast, Northern Ireland, United Kingdom. The university received its charter in 1845 as "Queen's College, Belfast", and opened four years later.

The Queen's University of Ireland was established formally by royal charter on 3 September 1850, as the degree-awarding university of the Queen's Colleges of Belfast, Cork, and Galway that were established in 1845 "to afford a university education to members of all religious denominations" in Ireland.