Feingold is a surname. Notable people with the surname include:
- Benjamin Feingold (1899–1982), American pediatric allergist
- Feingold diet, named after Benjamin
- David Sidney Feingold (1922–2019), an American biochemist and winner of the Israel Prize
- Eleanor Feingold, American statistical geneticist
- Kenneth Feingold (born 1952), American artist
- Leon Feingold (born 1973), American baseball player
- Marco Feingold (1913–2019), Austrian Holocaust survivor
- Michael Feingold (1945–2022), American critic, translator, lyricist, and playwright
- Russ Feingold (born 1953), American politician
- McCain-Feingold Bill, see Bipartisan Campaign Reform Act
- Sharon Feingold, American voice actress