A fingerprint sensor includes: a first layer including a plurality of pixels; a light transmitting hole array layer including a plurality of light transmitting holes providing light transmitting paths of light rays that are incident through the first layer; and a sensor layer including a plurality of photo sensors configured to sense the light rays that pass through the light transmitting holes and are incident on the sensor layer. A resolution at which the photo sensors are disposed in first areas on the sensor layer differs from a resolution at which the photo sensors are disposed in second areas on the sensor layer.