Criccieth (Cricieth ˈkrɪkjɛθ) is a town and community in Gwynedd, Wales, on the boundary between the Llŷn Peninsula and Eifionydd. The town is west of Porthmadog, east of Pwllheli and south of Caernarfon. It had a population of 1,826 in 2001, reducing to 1,753 at the 2011 census.
The town is a seaside resort, popular with families. Attractions include the ruins of Criccieth Castle, which have extensive views over the town and surrounding countryside. Nearby on Castle Street is Cadwalader's Ice Cream Parlour, opened in 1927, and the High Street has several bistro-style restaurants. In the centre is Y Maes, part of the original medieval town common.
The town is noted for its fairs, held on 23 May and 29 June every year, when large numbers of people visit the fairground and the market which spreads through many of the streets of the town.
Criccieth hosted the National Eisteddfod in 1975, and in 2003 was granted Fairtrade Town status. It won the Wales in Bloom competition each year from 1999 to 2004.
The town styles itself the "Pearl of Wales on the Shores of Snowdonia".
The earliest recorded form of the place name Criccieth in Welsh is found in Brut y Tywysogion, where reference is made to the imprisonment of Gruffudd ap Llywelyn in the 'castle of Cruceith''' (Middle Welsh orthography: Kastell Krukeith). The form Cruciaith was used by Iolo Goch in a famous 14th century poem addressed to Sir Hywel y Fwyall, custodian of the castle.
There are a number of theories as to the meaning, but the most popular is that it comes from crug caeth: caeth may mean 'prisoner' and thus the name could mean 'prisoner's rock', a reference to the imprisonment of one of Llywelyn ab Iorwerth's sons in the castle by his brother. However, caeth has the primary meaning in Middle Welsh of 'serf[s]' and the name could refer to a bond community nearby. In later medieval times the settlement was also known as Treferthyr (martyr's town), probably a reference to Saint Catherine, after whom the parish church is named.