‍Aberystwyth ">[abɛɾˈəstʊɨθ]) is a historic market town, administrative centre, and holiday resort within Ceredigion, West Wales, often colloquially known as Aber. It is located near the confluence of the rivers Ystwyth and Rheidol.

Historically part of Cardiganshire, since the late 19th century, Aberystwyth has also been a major Welsh educational centre, with the establishment of a university college there in 1872. At the 2001 census, the town's population was 15,935; it was reduced to 13,040 at the 2011 Census. During nine months of the year, there is an influx of students—to a total number of 10,400 as of September 2012. Including the suburbs of Llanbadarn Fawr, the population is 16,420.