Pwllheli (Welsh: [pʊɬˈhɛlɪ]) is a market town and community 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%, 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). Pwllheli has a range of shops and other services. As a local railhead with a market every Wednesday, the town is a gathering point for the population of the whole peninsula.