Deganwy (Middle Welsh Degannwy, Brythonic *Decantouion) is a small town in Conwy County Borough in Wales with a population of 3,700. It lies in the Creuddyn Peninsula alongside Llandudno and Rhos-on-Sea. Historically part of Caernarfonshire, it is in a more English-speaking region of north Wales, with only 1 in 4 residents speaking Welsh as a first language. It is located south of Llandudno and to the east of Conwy, which is on the opposite side of the River Conwy, and with which it forms the Conwy community. Indeed, the name Deganwy has been interpreted in modern times as Din-Gonwy, which would mean "Fort on the River Conwy", but the historical spellings make it impossible for this to be the actual origin of the name although mentioned in Domesday Book is "the territory of the Decanae tribe". The original wooden castle was rebuilt in stone after 1210. Deganwy is in the ecclesiastical parish of Llanrhos, and has a Victorian era Gothic parish church dedicated to All Saints.

Deganwy (Middle Welsh Degannwy, Brythonic *Decantouion) is a small town in Conwy County Borough in Wales with a population of 3,700. It lies in the Creuddyn Peninsula alongside Llandudno and Rhos-on-Sea. Historically part of Caernarfonshire, it is in a more English-speaking region of north Wales, with only 1 in 4 residents speaking Welsh as a first language. It is located south of Llandudno and to the east of Conwy, which is on the opposite side of the River Conwy, and with which it forms the Conwy community. Indeed, the name Deganwy has been interpreted in modern times as Din-Gonwy, which would mean "Fort on the River Conwy", but the historical spellings make it impossible for this to be the actual origin of the name although mentioned in Domesday Book is "the territory of the Decanae tribe". The original wooden castle was rebuilt in stone after 1210. Deganwy is in the ecclesiastical parish of Llanrhos, and has a Victorian era Gothic parish church dedicated to All Saints.