Trinity College (Irish: Coláiste na Tríonóide), officially The College of the Holy and Undivided Trinity of Queen Elizabeth near Dublin, is the sole constituent college of the University of Dublin, a research university in Dublin, Ireland. Queen Elizabeth I founded the college in 1592 as "the mother of a university" that was modelled after the collegiate universities of Oxford and Cambridge, but unlike these affiliated institutions, only one college was ever established; as such, the designations "Trinity College" and "University of Dublin" are usually synonymous for practical purposes.
Trinity College Dublin is a sister college to St John's College, Cambridge and Oriel College, Oxford, and by incorporation, a graduate of Dublin, Oxford or Cambridge can be conferred the equivalent degree at either of the other two without further examination. The university is legally incorporated by "the Provost, Fellows, Foundation Scholars and other members of the Board," as outlined by its founding charter. It is one of the seven ancient universities of Britain and Ireland, as well as Ireland's oldest surviving university. The college's main campus, in the heart of Dublin, has often been ranked among the most iconic in the world, and is the setting for a number of novels, films and urban legends. The university has educated many of Ireland's most successful poets, playwrights and authors, including Oscar Wilde, Jonathan Swift, Bram Stoker, Percy French, William Trevor, John Millington Synge, Sally Rooney, Oliver Goldsmith, Thomas Moore and William Congreve; Nobel Laureates Samuel Beckett, Ernest Walton, Mairead Maguire and William Cecil Campbell; former Presidents of Ireland Douglas Hyde, Éamon de Valera, Mary Robinson, and Mary McAleese; philosophers George Berkeley and Edmund Burke; politicians David Norris, Edward Carson, Robert Emmet, Wolfe Tone and John Redmond, as well as mathematicians George Salmon, Robert Mallet, Bartholomew Lloyd and William Rowan Hamilton. Notable faculty members at the university included Humphrey Lloyd, J. B. Bury and E. T. Whittaker.
Trinity College Dublin became the first and only Irish university to enter the Top 50 rankings of both the QS World University Rankings and the Times Higher Education in 2009, when it was ranked 43rd in the world. It is positioned 98th in the world as of 2022, and in 2021, it was also ranked the European Union's most international university, with nearly 30% of its student population from outside Irelan