John Ponsonby

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