Jacob Bouverie, 1st Viscount Folkestone (bapt. 14 October 1694 – 17 February 1761) was an English politician of huguenot descent, known as Sir Jacob Bouverie, 3rd Baronet from 1737 to 1747.
Born Jacob des Bouverie, he was baptised on 14 October 1694 in St Katharine Cree, London, the son of Sir William des Bouverie, 1st Baronet and his second wife Anne Urry.
He was admitted to the Middle Temple in 1708, and matriculated at Christ Church, Oxford on 20 October 1711. On 21 November 1736, he succeeded his elder brother, Edward, in the baronetcy. He adopted the surname of Bouverie by Act of Parliament on 22 April 1737.
He was Member of Parliament in the Parliament of Great Britain for Salisbury between 1741 and 1747, and was appointed Recorder of Salisbury in 1744.
He was created Viscount Folkestone and Baron Longford on 29 June 1747 and was appointed one of the deputy lieutenants of Wiltshire on 8 November 1750. In 1755 he was elected the first president of the Royal Society for the encouragement of Arts, Manufactures & Commerce (now the RSA).
He married, firstly, Mary Clarke on 31 January 1724 in St Paul's Cathedral, London., daughter of Bartholomew Clarke, merchant, of Delapré Abbey, Hardingstone in the county of Northamptonshire and Mary née Young, sister and sole heir to Hitch Young MP, of Roehampton, in Surrey. They had five sons and six daughters but only two sons survived infancy. The eldest went on to inherit and his second surviving son Edward married Harriet Fawkener and became owner of Delapré. :