Creuddyn peninsula is the geographical term for a peninsula in the county borough of Conwy in North Wales. It includes the town of Llandudno, plus Rhos-on-Sea, Deganwy 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.