Disclosed is A gas barrier film comprising a substrate film and a barrier layer containing an organic region and an inorganic region on the substrate film, in which, when the organic region is provided on one surface of the gas barrier film, the outermost layer on the side with the organic region is an adhesive layer, or when the organic regions are provided on both surfaces of the gas barrier film, at least one outermost layer of the gas barrier film is an adhesive layer. The gas barrier film is capable of simplifying the working process with it and keeping its good gas-barrier property.