Jenyns is a surname. Notable persons with that name include:
Bob Jenyns (born 1944), Australian artist Essie Jenyns (1864–1920), Australian stage actress John Jenyns ( 1660–1717), English politician Leonard Jenyns, (1800–1893), English clergyman, author and naturalist Roger Jenyns (1663–1740), English knight and landowner Soame Jenyns (1704–1787), English writer Stephen Jenyns ( – 1523), English politician
See also Jennings (disambiguation)