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- Lauren Cooper, a character in The Catherine Tate Show
- Leigh Cooper (born 1961), English footballer
- Leon Cooper (born 1930), Nobel Laureate in physics - theory of superconductivity
- Lettice Cooper (1897–1994), English writer
- Lindsay Cooper (born 1951), English musician (bassoon and oboe), composer and activist
- Lindsay L. Cooper (1940–2001), Scottish musician (double-bass and cello)
- Lionel Cooper, Australian rugby league player
- Lionel Cooper (mathematician) (1915–1979), South African mathematician
- Louise Cooper (1952–2009), British writer
Read more about this topic: Cooper (surname)