John Trelawny may refer to:
John Trelawny I ( 1397), MP for Bodmin in 1397, father of John Trelawny II John Trelawny II (fl. 1413–1421), MP for Cornwall 1413–1421, son of John Trelawny I John Trelawny III (fl. 1421–1449), MP for Liskeard 1421 and Lostwithiel 1449 John Trelawny (died 1563), member of parliament (MP) for Liskeard John Trelawny (died 1568), his son, High Sheriff of Cornwall Sir John Trelawny, 1st Baronet (1592–1664), Royalist before and during the English Civil War John Trelawny (died 1680), MP for West Looe John Trelawny (died 1682), MP for West Looe John Trelawny (1633–1706), MP for Plymouth Sir John Trelawny, 4th Baronet (1691–1756), MP for East Looe, West Looe and Liskeard John Salusbury-Trelawny (1816–1885), MP for Tavistock and Eastern Cornwall
See also Squire Trelawney (John Trelawney), a supporting character from Robert Louis Stevenson's 1883 novel Treasure Island