A display device includes a display module, a protection film, and a complementary film. The display module is foldable with respect to a first bending axis and a second bending axis spaced apart from the first bending axis. The protection film is below the display module, overlaps the first bending axis and the second bending axis, and includes a polymer material. The complementary film is below the protection film, overlaps only the second bending axis of the first and second bending axes, and includes a metal.