According to one embodiment, a display device, includes a retroreflective element includes a base, and first and second retroreflectors each retroreflecting light made incident without transmitting the base, and a retarder element disposed between a display module and a polarizing element and between the retroreflective element and the polarizing element, the first and second retroreflectors being adjacent to each other, each of the first and second retroreflectors includes a recess portion on a side facing the retarder element.