Pwllheli (Welsh pronunciation: [pʊɬˈhɛlɪ]) is a community and the main market town of the Llŷn Peninsula (Welsh: Penrhyn Llŷn) in Gwynedd, north-western Wales. It had a population of 4,076 in 2011 of whom a large proportion, 81 per cent, are Welsh speaking. Pwllheli is the place where Plaid Cymru was founded. It is the birthplace of the Welsh poet Sir Albert Evans-Jones (bardic name Cynan).