Gwyddelwern is a small village and community of 508 residents,[2] reducing to 500 at the 2011 census, situated approximately 2 miles (3.2 km) north of Corwen in Denbighshire in Wales.

Besides farm work, local employers include a saw mill in the village and light manufacturing in Corwen and Cynwyd, further south.

[5][6][7] In 1550, Gwyddelwern absorbed the neighboring parish of Llanaelhaiarn[8] (named after its founder and patron saint Aelhaiarn, who visited the region in the early 7th century with his master Saint Beuno); a small village at the site was long also known as Aelhaiarn[9] but was eventually replaced by the small community of Pandy'r Capel.

At the end of 1649 at least 20 men from the village were fined by the Parliamentarian side for "delinquency" to pay for their involvement fighting for the king.

There is still activity at Graig Lelo, which plays host to a vehicle breakers and a granite and marble finishing business.

Gwyddelwern's historic architecture includes the much-rebuilt high spire of the parish church of St Beuno.