John Wynn may refer to: John "Wynn" ap Maredudd, Head of the House of Cunedda, 1525–1559 Sir John Wynn, 1st Baronet (1553–1627), his descendant, Welsh baronet, Member of Parliament for Carnarvonshire, 1586 Sir John Wynn, 5th Baronet (1628–1719) Sir John Wynn, 2nd Baronet (1701–1773)