An organic light-emitting diode, an organic light-emitting display device including the same, and a method of controlling dual emission of the organic light-emitting diode. The organic light-emitting diode includes: a first electrode and a second electrode facing each other; a common electrode interposed between the first electrode and the second electrode; a first organic layer interposed between the first electrode and the common electrode; and a second organic layer that is interposed between the second electrode and the common electrode and is reverse-symmetric to the first organic layer with respect to the common electrode.