Garnes is a surname. Notable people with the surname include:
Antoinette Garnes (about 1887–1938), American soprano singer Chelen Garnes (born 2000), American football player JoLynn Garnes, American film editor Kåre Garnes (born 1954), Norwegian jazz musician Leo Garnes (born 1968), Barbadian long-distance runner Paul Garnes, American film and television producer Sam Garnes (born 1974), American football player Sherman Garnes (1940–1977), American singer
See also Garne, another surname