Cardiff University is a public research university in Cardiff, Wales. It was established in 1883 as the University College of South Wales and Monmouthshire and became a founding college of the University of Wales in 1893. It was renamed University College, Cardiff in 1972 and merged with the University of Wales Institute of Science and Technology in 1988 to become University of Wales College, Cardiff and then University of Wales, Cardiff in 1996. In 1997 it received degree-awarding powers, but held them in abeyance. It adopted the operating name of Cardiff University in 1999; this became its legal name in 2005, when it became an independent university awarding its own degrees.

Cardiff is the capital and largest city of Wales. Cardiff had a population of 362,310 in 2021 and forms a principal area officially known as the City and County of Cardiff. The city is the eleventh largest in the United Kingdom. Located in the southeast of Wales and in the Cardiff Capital Region, Cardiff is the county town of the historic county of Glamorgan and in 1974–1996 of South Glamorgan. It belongs to the Eurocities network of the largest European cities. A small town until the early 19th century, its prominence as a port for coal when mining began in the region helped its expansion. In 1905, it was ranked as a city and in 1955 proclaimed capital of Wales. Cardiff Built-up Area covers a larger area outside the county boundary, including the towns of Dinas Powys and Penarth.