John Jenyns (c. 1660 – 1717), of Hayes and Bedford Row, St Andrew Holborn, Middlesex, was an English Tory politician who sat in the House of Commons from 1710 to 1717.
He succeeded his father as Surveyor General of the Fens in 1693, a post he then held for 20 years.
He acquired an estate at Donnington, Isle of Ely, but in 1702 he was still serving on the bench and in the lieutenancy for Middlesex.
[2] Jenyns died on 1 February 1717 and was buried in the parish church at Hayes.
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