Ricatus was a possible 11th-century king of Cornwall, although recent scholarship has cast doubt on his existence. The only evidence for a king of this name is the medieval Penzance Market Cross which now stands in the grounds of Penlee House in Penzance, Cornwall, England, UK. R. A. Stewart Macalister in his Corpus Inscriptionum Insularum Celticarum published in 1949 stated that an inscription in a panel on the side of the cross read REGIS RICATI CRUX, translating to "Cross of King Ricatus". In 1980 Mullion School, Mullion, Cornwall named one of its houses, Ricat, after King Ricatus.