In a method of driving an organic light emitting display device, the organic light emitting display device includes: a plurality of data lines; a plurality of scan lines; and a plurality of pixels coupled to the data lines and the scan lines, the method includes: applying dummy-data signals and pre-data signals to the pixels from respective ones of the scan lines during a non-emission period; and non-sequentially applying scan signals and data signals to the pixels from the respective ones of the scan lines during an emission period, wherein the data signals include data information corresponding to respective subfields in a unit time.