An organic light emitting display device includes a substrate including first to third pixel regions; and an organic light emitting diode including a transparent electrode, a reflective electrode and a light emitting layer between the transparent electrode and the reflective electrode, wherein the light emitting layer in the organic light emitting diode in the first pixel region includes a first emitting part including a first emitting material layer and second emitting part including a second emitting material layer, and the second emitting part is positioned between the first emitting material layer and the transparent electrode, wherein the light emitting layer in the organic light emitting diode in the second pixel region includes a third emitting part including a third emitting material layer and fourth emitting part including a fourth emitting material layer, and the fourth emitting part is positioned between the third emitting material layer and the transparent electrode, and wherein each of the first and fourth emitting material layers is a fluorescent emitting layer, and each of the second and third emitting material layers is a phosphorescent emitting layer.