Francis Joseph Bayldon MBE (1872–1948) was an Australian master mariner and nautical instructor.

Born in England, he was apprenticed to Devitt & Moore, and was an officer on their passenger ships, on a route that circled the globe, around the Cape of Good Hope and Cape Horn.

He helped correct nautical charts for Pacific navigation.

[1] He was a fellow of the Royal Australian Historical Society, and in 1925, published an article on the journeys of Luis Váez de Torres from the New Hebrides to the Moluccas.

He was president of the local League of Ancient Mariners and vice-president of the Shiplovers' Society in Sydney.