Jenkyns is a surname. Notable people with the surname include:
Andrea Jenkyns (born 1974), British politician Caesar Jenkyns (1866–1941), Welsh international footballer Henry Jenkyns (1838–1899), English lawyer and parliamentary counsel Richard Jenkyns (1782–1854), English academic administrator and dean Richard Jenkyns (born 1949), Professor of the Classical Tradition at Oxford University
See also The Jenkyns Event, one of the names for the Toarcian extinction event Jenkyn Jenkins Jenkins (surname)