St Mawgan in Pydar (Cornish: Lanherne) is a civil parish in Cornwall, England, United Kingdom. The population of this parish at the 2011 census was 1,173. The village of St Mawgan is situated four miles northeast of Newquay. The nearby Royal Air Force station, RAF St. Mawgan, takes its name from the village and is next to Newquay Cornwall Airport. The River Menalhyl runs through St Mawgan village and the valley is known as The Vale of Lanherne. It was the subject of a poem by poet Henry Sewell Stokes.