Sir Benjamin Keene (1697–1757) was a British diplomat, who was British Ambassador to Spain from 1729 to 1739, then again from 1748 until his death in Madrid in December 1757. He has been described as "by far the most prominent British agent in Anglo-Spanish relations of the 18th century".

The Treaty of Seville was signed on 9 November 1729 between Britain, France, and Spain, formally ending the 1727–1729 Anglo-Spanish War; the Dutch Republic joined the Treaty on 29 November.