John WynnJohn Wynn may refer to:John "Wynn" ap Maredudd, Head of the cadet lineage of the House of Aberffraw descending from Rhodri ab Owain Gwynedd, 1525–1559Sir John Wynn, 1st Baronet, his descendant, Welsh baronet, Member of Parliament for Carnarvonshire, 1586Sir John Wynn, 5th Baronet Sir John Wynn, 2nd Baronet