Beunans Meriasek (English: The Life of Saint Meriasek) is a Cornish play completed in 1504. Its subject is the legends of the life of Saint Meriasek or Meriadoc, patron saint of Camborne, whose veneration was popular in Cornwall, Brittany, and elsewhere. It was written in the Cornish language, probably written around the same time and in the same place as Bewnans Ke, the only other extant Cornish play taking a saint's life as its subject. The manuscript of Beunans Meriasek is held in the Peniarth Collection at the National Library of Wales.