John Ponsonby may refer to: John Ponsonby (politician) (1713–1789), Irish politician John Ponsonby, 1st Viscount Ponsonby (c. 1772 – 1855), British diplomat John Ponsonby, 4th Earl of Bessborough (1781–1847), English politician John Ponsonby, 5th Earl of Bessborough (1809–1880), British politician John Ponsonby (British Army officer) (1866–1952), British general John Ponsonby (RAF officer) (1955-2022), senior commander in the Royal Air Force