John Byron, English admiral and politician, 24th Commodore Governor of Newfoundland (died 1786)

Vice-Admiral John Byron was a Royal Navy officer, explorer and colonial administrator. He earned the nickname "Foul-Weather Jack" in the press because of his frequent encounters with bad weather at sea. As a midshipman, he sailed in the squadron under George Anson on his voyage around the world, though Byron's ship, HMS Wager, made it only to southern Chile, where it was wrecked. He returned to England with the captain of the ship.

The following is a list of governors, commodore-governors, and lieutenant governors of Newfoundland and Labrador. Though the present day office of the lieutenant governor in Newfoundland and Labrador came into being only upon the province's entry into Canadian Confederation in 1949, the post is a continuation from the first governorship of Newfoundland in 1610.