Creuddyn Peninsula is the geographical term for a small peninsula in the county borough of Conwy in Wales. It includes the town of Llandudno, plus Rhos-on-Sea, Deganwy, Penrhyn Bay and Llandudno Junction. The Great Orme lies at the end of the peninsula, and nearby is the Little Orme.
The area is usually called simply Y Creuddyn, being the Welsh name of the medieval commote (an administrative unit within a cantref) roughly corresponding to the peninsula itself, though somewhat larger.
The population of the peninsula including the towns mentioned above is around 38,000, making it very densely populated.
The Welsh-medium secondary school Ysgol y Creuddyn is situated on the peninsula.
Coordinates: 53°19′N 3°48′W / 53.31°N 3.80°W