Coordinates: 50°27′18″N 4°59′53″W / 50.455°N 4.998°W / 50.455; -4.998
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.
St Mawgan also has a 13th-century parish church, dedicated to St Mauganus and St Nicholas. The church was originally a cruciform building of the 13th century but was enlarged by a south aisle and the upper part of the tower in the 15th. The unusual rood screen and bench ends are noteworthy and there are many monumental brasses to members of the Arundell family; these include George Arundell, 1573, Mary Arundell, 1578, Cyssel and Jane Arundell, ca. 1580, Edward Arundell (?), 1586, (St Mauganus was a Welshman and is also honoured at Mawgan in Meneage in Kerrier and in Wales and Brittany.)