Colby is a given name. Notable people with the name include:
Colby Armstrong (born 1982), ice hockey playerColby Bockwoldt (born 1981), American football player in the NFLColby Buzzell (born 1976), soldier and journalistColbie Caillat (born 1985), American pop singer-songwriterColby Chandler (CEO), CEO of Eastman-KodakColby Cohen (born 1989), American ice hockey playerColby Cooper (born 1976), Assistant US Secretary of StateColby Cosh (born 1971), journalistColby Donaldson (born 1974), actorColby O'Donis, singerColby French, actorColby Lewis (born 1979), baseball playerColby Miller, VJColby Paul, American child actorColby Rasmus (born 1986), baseball playerColby Shea, guitaristColby Starck, drummerFictional characters:
Colby Granger, character from television series Numb3rsColby Chandler, character from the daytime soap opera, All My Children