John Courtenay (1520/1521 - 1560) of Tremere (now Tremore) in the parish of Lanivet in Cornwall, was a Member of Parliament.
He was the third child from Richard Courtenay's second marriage to Jane Boscawen. In his youth he appears to have been attached to Cromwell’s household. In the autumn of 1553, Courtenay used his family's connection with the Lostwithiel constituency to have himself elected the town's junior Member in Mary's first Parliament. In the autumn of 1555, he was elected as a Member for Penryn. He died on 1 March 1560, being buried at Lanivet, where a monument was erected to his memory. He left life interest in the Tremere property to his widow, Elizabeth Trengrove, who later married Thomas Arundell.
He represented Lostwithiel in October 1553, Bodmin in November 1554 and Penryn in 1555.[1]