A display device is disclosed. In one embodiment, the display device includes a display panel displaying an image and a bottom chassis including a bottom portion where the display panel is mounted and a plurality of side walls connected with the bottom portion and facing a side surface of the display panel. At least two of the side walls include a base side wall and a reinforcing side wall integrally formed with the base side wall by a connection portion. The connection portion and the reinforcing side wall are bent from the base side wall and thus partially overlap the base side wall.