John Trevisa (or John of Trevisa; Latin: Ioannes Trevisa; fl. 1342–1402 AD) was a Cornish writer and translator. Trevisa was born at Trevessa in the parish of St Enoder in mid-Cornwall, in Britain and was a native Cornish speaker. He was educated at Exeter College, Oxford, and became Vicar of Berkeley, Gloucestershire, chaplain to the 5th Lord Berkeley, and Canon of Westbury on Trym.