John Alexander Fladgate (1 January 1809 - 12 December 1901), was a port wine merchant.Fladgate was the son of Francis Fladgate (1773 - 1821), an Essex Street solicitor, friend of William Jerdan, who employed John Hamilton Reynolds from 1818 to 1820, and Maria Anne Bassett. He was christened in the church of St. Giles-in-the-Fields on 21 December 1809.