Sumner is a given name. Notable people with the name include:
- Sumner Archibald Cunningham (1843âÂÂ1913), American Confederate veteran and newspaper editor.
- Sumner Gerard, American businessman and diplomat, US Ambassador to Jamaica
- 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, 1923âÂÂ2020), Chairman of Viacom
- Sumner Stone, (born 1945), typeface designer
- Sumner L. Trussell (1860âÂÂ1931), judge of the United States Board of Tax Appeals
- Sumner Welles, (1892âÂÂ1961), U. S. Undersecretary of State