Aberystwyth University (Welsh: Prifysgol Aberystwyth) is a public research university in Aberystwyth, Wales. Aberystwyth was a founding member institution of the former federal University of Wales. The university has over 8,000 students studying across three academic faculties and 17 departments.

Founded in 1872 as University College Wales, Aberystwyth, it became a founder member of the University of Wales in 1894, and changed its name to the University College of Wales, Aberystwyth. In the mid-1990s, the university again changed its name to become the University of Wales, Aberystwyth. On 1 September 2007, the University of Wales ceased to be a federal university and Aberystwyth University became independent again. The annual income of the institution for 2022–2023 was £130.8 million of which £22.2 million was from research grants and contracts, with an expenditure of £127.8 million.