Nefyn is town and community on the northwest coast of the Llŷn Peninsula, Gwynedd, Wales. Nefyn is popular with visitors for its sandy beach, and has one substantial hotel, a community pub and a beach cafe. The A497 road terminates in the town centre. The community includes Edern and Morfa Nefyn. In 2011, the population was 2,602, with Nefyn itself having 1,373 people.