Sumner is a surname, and may refer to
- Allen Melancthon Sumner (1882-1918), American marine soldier
- Bernard Sumner (born 1956), British musician
- Brian Sumner (born 1979), British skateboarder
- Charles Sumner (1811-1874), American politician
- Charles Richard Sumner (1790-1874), British religious leader
- Cid Ricketts Sumner (1890-1970), American novelist
- Claude Sumner, Canadian/Ethiopian philosopher
- Edwin Vose Sumner (1797-1863), American soldier
- George Heywood Maunoir Sumner (Heywood Sumner, 1853-1940), English artist, designer, writer and archaeologist
- Gordon Sumner (born 1951), the British musician Sting
- Increase Sumner (1746-1799), American politician and jurist
- J. D. Sumner (1924-1998), American singer and songwriter
- James B. Sumner (1887-1955), American biochemist
- Jake Sumner (born 1985), British model
- Jethro Sumner, American Revolutionary War general
- Joe Sumner (born 1976), British musician
- John Sumner (1936-2004), British mountaineer
- John Bird Sumner (1780-1862), British religious leader
- Joseph Burton Sumner (1837-1920), American settler
- Kelly Sumner, British businessman
- L. W. Sumner, Canadian philosopher
- Mary Sumner (1828–1921), founder of the Mothers' Union
- Robert Sumner (born 1922), American evangelist & writer
- Samuel S. Sumner (1842-1937), American general
- Steve Sumner (fl. 1980s), New Zealand football player
- Thomas Hubbard Sumner (1807-1876), American mariner
- Timothy Sumner, British astronomer
- William Graham Sumner (1840-1910), American sociologist
- William H. Sumner (1780-?), Boston historical figure
Also
As a given name:
- Sumner Paine, 1896 Olympic shooting gold and silver medalist
- Sumner Chilton Powell, winner of the Pulitzer Prize for History in 1964
- Sumner Redstone (or Sumner Murray Rothstein, born 1923), Chairman of Viacom
- Sumner Welles, (1892-1961), U. S. Undersecretary of State
Places
- In the United States:
- Sumner, Georgia
- Sumner, Illinois
- Sumner, Iowa
- Sumner, Maine
- Sumner, Michigan
- Sumner, Mississippi
- Sumner, Missouri
- Sumner, Nebraska
- Sumner, Washington
- There are 3 places called Sumner in the state of Wisconsin:
- Sumner County, Kansas
- Sumner County, Tennessee
- Sumner Township, Michigan
- Sumner Township, Minnesota
- Fort Sumner, New Mexico
- Lake Sumner, New Mexico
- Sumner Elementary School, in Topeka, Kansas
- The Sumner Tunnel, a vehicular tunnel in Boston, Massachusetts
- In Haiti:
- Avenue Charles Sumner, in the capital city, Port-au-Prince
- In New Zealand:
- Sumner, New Zealand, a seaside suburb of Christchurch, New Zealand
- Lake Sumner
Things
- Sumner (crater), a crater on the moon
- The Sumner method, a way of finding a ship's location at sea; William Thomson (Lord Kelvin) calculated a set of tables for its ready application
- SS Charles Sumner, a World War II Liberty ship
- USS Sumner, a number of U.S. Navy ships, including
- USS Sumner (DD-333), Clemson-class destroyer
- USS Sumner (AGS-5), survey ship
- USS Allen M. Sumner (DD-692), destroyer, namesake of class (see Allen M. Sumner class destroyer)
