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- Joey Gamache (born 1967); World Boxing Association Lightweight Champion who boxed from 1992 to 2000; originally from Lewiston, Maine
- Gladys George (1904–1954), actress, The Maltese Falcon, The Best Years of Our Lives; born in Patten
- Frank Bunker Gilbreth, Sr. (1868–1924), early advocate of scientific management and pioneer of motion study; born in Fairfield
- Everett Glass (1891–1966), actor; born in Bangor
- Charles Goddard (1879–1951), playwright and screenwriter for silent films; born in Portland
- Gary Gordon (1960–1993), Master Sergant in the U.S. Army who perished during Operation Gothic Serpent; born in Lincoln
- Noah Gray-Cabey (born 1995), teen actor, My Wife and Kids, Heroes; raised in Newry
- Patty Griffin (born 1964), Grammy award-winning singer-songwriter and musician; born in Old Town
Read more about this topic: List Of People From Maine