Sir Edward St John (died 7 March 1389), of Londesborough and Weaverthorpe, Yorkshire was an English landowner.
St John was a younger son of Edward St John of Litchfield and Sherborne and Eve Dawtrey.[1] In 1361, Edward granted his estate in Chirton, Wiltshire, to his brother Richard and his wife Margaret, in tail.
Edward married Anastasia, daughter and co-heiress of William Aton and Isabel Percy, they had a daughter Margaret who married Sir Thomas Bromflete.[2] St John held in the name of his wife Anastasia, her lands of Brompton.