Jennings is a surname of early medieval English origin (also the Anglicised version of the Irish surnames Mac Sheóinín or MacJonin). Notable people with the surname include:
Adam Jennings, English actor and film director
Adam Jennings (American football), American football player
Alex Jennings, British actor
Asa Jennings, American who commanded the evacuation of refugees after the Great Fire of Smyrna
Billy Jennings (born 1952), English footballer
Billy Jennings (Welsh footballer) (1893–1968), Welsh footballer
Brandon Jennings, American basketball player
Brian Jennings, American football player
Bryant Jennings, American boxer
Charles Edward Jennings de Kilmaine (1751–1799), Irish-born French general
Charles Jennings (journalist) (1908–1973), Canadian journalist
Christine Jennings, American politician
Claudia Jennings, American model and actress
Clyde Jennings (1916–2006), Florida philatelist
Edward Jennings (MP) (c1647–1725), English politician, MP for East Looe 1713–15
Edward Jennings (VC) (1820–1889), Irish recipient of the Victoria Cross
Edward Harrington Jennings (born 1937), tenth president of Ohio State University
Edward L. Jennings (born 1968), Florida politician
Edward Jennings (rower) (1898–1975), American rower
Elizabeth Jennings, English poet
Elizabeth Jennings Graham (1830–1901), American black civil rights activist and teacher
Ernie Jennings (born 1949), American football player
Francis Jennings, American historian
Gary Jennings, American author
George Jennings, pioneering British sanitary engineer
Gerald H. Jennings, ichthyologist and author
Greg Jennings, American football player
Henry Jennings, British privateer
Henry Constantine Jennings, English antiquarian
Herbert Spencer Jennings, zoologist, geneticist and eugenicist
Hughie Jennings, American baseball player
Humphrey Jennings (1907–1950), English filmmaker
J. B. Jennings, American politician
James Jennings (born 1960), Irish philosopher
Jeremy Jennings, English political theorist
Jesse D. Jennings (1909–1997), American archaeologist
John Jennings (disambiguation), several people
Jonas Jennings, American football player
Jonathan Jennings, first governor of Indiana
J. T. W. Jennings, 20th century architect
Keith Jennings (American football) (born 1966), American football player
Keith Jennings (basketball) (born 1968), American basketball player and coach
Keith R. Jennings (born 1932), English chemist
Keith Jennings (cricketer) (born 1953), English cricketer
Ken Jennings, holder of longest winning streak on the game show Jeopardy!
Kenneth Jennings, composer and director of the St. Olaf Choir
La Vinia Delois Jennings, American literary scholar
Lyfe Jennings, American musician
Lynn Jennings, American distance runner
M. D. Jennings, American football player
Marlene Jennings, Canadian politician
Mason Jennings, American musician
Michael Jennings (disambiguation), several people
Morley Jennings (1890–1985), American college sports coach
Professor Nick Jennings, Regius Professor of computer science
Owen Jennings, New Zealand politician
Pat Jennings, Northern Irish footballer
Patrick Jennings (1831–1897), Australian politician
Paul Jennings (Australian author) (born 1943), Australian children's author
Paul Jennings (UK author) (1918–1989), English humorist
Paul Jennings (slave) (1799–1874), American slave owned by President James Madison
Philip Jennings (The Americans), fictional character in the 2010s American television drama series The Americans
Philip Jennings (Queenborough MP) (c1679–1740), English lawyer and politician, MP for Queenborough 1715–22
Sir Philip Jennings-Clerke, 1st Baronet (c1722–January 1788), known as Philip Jennings until the 1760s, MP for Totnes 1768–88
Peter Jennings (1938–2005), ABC News anchor and newsman
Richard Jennings (c1619–1668), British politician
Robert Yewdall Jennings (1913–2004), English jurist
Sarah Jennings (1660–1744), 1st Duchess of Marlborough
Shooter Jennings, American musician
Stanford Jennings, American football player
Steve Jennings (footballer) (born 1984), English footballer
Stephen Arthur Jennings, Canadian mathematician
Ted Jennings, (born 1990), American football player
Theodore Jennings, American author
Tim Jennings, American football player
Tom Jennings, creator of FidoNet
Toni Jennings, American politician
Waylon Jennings (1937–2002), American country music singer
Will Jennings (born 1944), American songwriter
William Dale Jennings, American author
William M. Jennings (1920–1981), American businessman and hockey team owner
William Nicholson Jennings (1860–1946), American photographer
William Pat Jennings (1919–1994), U.S. Representative from Virginia
William Sherman Jennings (1863–1920), governor of Florida
