Dublin is the largest centre of education in Ireland, and is home to four universities and a number of other higher education institutions. It was the European Capital of Science in 2012.

The University of Dublin is the oldest university in Ireland, dating from the 16th century, and is located in the city centre. Its sole constituent college, Trinity College (TCD), was established by Royal Charter in 1592 under Elizabeth I. It was closed to Roman Catholics until 1793, and the Catholic hierarchy then banned Roman Catholics from attending until 1970. It is situated in the city centre, on College Green, and has over 18,000 students.

The National University of Ireland (NUI) has its seat in Dublin, which is also the location of the associated constituent university of University College Dublin (UCD), which has over 30,000 students. Founded in 1854, it is now the largest university in Ireland. UCD's main campus is at Belfield, about 5 km (3 mi) from the city centre, in the southeastern suburbs.

As of 2019, Dublin's principal, and Ireland's largest, institution for technological education and research, Dublin Institute of Technology (DIT), with origins in 1887, has merged with two major suburban third level institutions, Institute of Technology, Tallaght and Institute of Technology, Blanchardstown, to form Technological University Dublin, Ireland's second largest university by student population. The new university offers a wide range of courses in areas include engineering, architecture, the sciences, health, journalism, digital media, hospitality, business, art and design, music and the humanities programmes, and has three long-term campuses, at Grangegorman, Tallaght and Blanchardstown.

Dublin City University (DCU), formerly the National Institute for Higher Education (NIHE) Dublin, offers courses in business, engineering, science, communication courses, languages and primary education. It has around 16,000 students, and its main campus is located about 7 km (4 mi) from the city centre, in the northern suburbs. Aside from the main Glasnevin Campus, the Drumcondra campuses includes the former St. Patrick's College of Education, Drumcondra now also hosting students from the nearby Mater Dei Institute of Education and students from the Church of Ireland College of Education at the DCU Campus at All Hallows College.

The Royal College of Surgeons in Ireland (RCSI) conducts a medical school which is both a university (since 2019) and a recognised college of the NUI, and is situated at St. Stephen's Green in the city centre; there are also large medical schools within UCD and Trinity College. The Royal College of Surgeons in Ireland, which is also known as RCSI University of Medicine and Health Sciences, Ireland's first private university. It was established in 1784 as the national body for the surgical branch of medicine in Ireland, with a role in supervision of training, and as of 2021 provides a broad range of medical education in multiple countries.
List the universities in Dublin in order of founding year ascending. Supply the answer as an enumerated list in the format {University name}, {Year of founding}
1. Trinity College Dublin (TCD), 1592
2. Royal College of Surgeons in Ireland (RCSI), 1784
3. University College Dublin (UCD), 1854
4. Dublin Institute of Technology (DIT), 1887
5. Dublin City University (DCU), 1975