A quantum dot color filter includes a first pixel region, a second pixel region, a third pixel region, and a fourth pixel region. The first pixel region includes a first color conversion layer including quantum dots configured to convert incident light into light of a first color. The second pixel region includes a second color conversion layer including quantum dots configured to convert incident light into light of the first color, and a third color conversion layer including quantum dots configured to convert incident light into light of a second color. The third pixel region includes a fourth color conversion layer including quantum dots configured to convert incident light into light of the second color. The fourth pixel region includes a scattering material layer.