The city of Chester was also historically called Caerleon. For the champion racehorse, see Caerleon II

Caerleon (; ) is a suburban village and community, situated on the River Usk  in the northern outskirts of the city of Newport, Wales. Caerleon is a site of archaeological importance, being the site of a notable Roman legionary fortress, Isca Augusta, and an Iron Age hill fort. The Wales National Roman Legion Museum and Roman Baths Museum are in Caerleon close to the remains of Isca Augusta. The town also has strong literary associations, as Geoffrey of Monmouth makes Caerleon one of the most important cities in Britain in his Historia Regum Britanniæ, and Alfred Lord Tennyson wrote Idylls of the King while staying there.