An organic light emitting display device includes a plurality of pixels including a first pixel and a second pixel. Each of the first pixel and the second pixel includes at least one red sub pixel, a plurality of green sub pixels, and at least one blue sub pixel. The red sub pixels and the blue sub pixels are aligned in a first direction, and the plurality of green sub pixels is disposed between the at least one red sub pixel and at least one blue sub pixel of each pixel. The red sub pixel, the plurality of green sub pixels, and the blue sub pixel of the first pixel form a first group, and the red sub pixel, the plurality of green sub pixels, and the blue sub pixel of the second pixel form a second group.