Adam Easton (c. 1328/1338 – 15 September 1397) was an English cardinal, born at Easton in Norfolk. He joined the Benedictines at Norwich moving on to the Benedictine Gloucester College, Oxford where he became one of the most outstanding students of his generation, being especially proficient in Hebrew. He is known to have accompanied Simon Langham to Rome, then Montefiascone and Avignon and he held the post of socius in Langham's household. Being a man of learning and ability, he obtained a post in the Curia.