According to one embodiment, a display system includes a display device that displays an image rearward of a vehicle, a first illuminance sensor that detects the brightness around the vehicle, and a second illuminance sensor that detects the intensity of the light emitted onto the front surface of the display device, and the display device includes a housing with an opening on the front side, an electro-optic layer with a transmissive-reflective layer that transmits a portion of incident light and reflects another portion of the incident light, the electro-optic layer being configured to vary the reflectivity of the incident light, a display placed on the rear side of the electro-optic layer and configured to display at least a portion of the rearward image of the vehicle, and a control circuit that controls the brightness of the display based on a value of at least one of first illuminance and second illuminance.