Samuel Ongley (1697 – 15 June 1747), of Old Warden, Bedfordshire, was an English politician who sat in the House of Commons from 1729 to 1747. Ongley was born in London, the son of draper Samuel Ongley and nephew and heir of Sir Samuel Ongley, MP of Old Warden Park, Bedfordshire. He matriculated at St John's College, Oxford in 1716. In 1726, he inherited the Old Warden estate on his uncle's death. He also married Anne Harvey, the daughter of John Harvey of Northill, Bedfordshire on 19 September 1726.