An organic light emitting display device, includes: pixels connected to scan lines, light emission lines, and data lines crossing the scan lines and the light emission lines, and including organic light emitting diodes, and pixel driving circuits to output a driving current to the organic light emitting diodes, respectively; a plurality of dummy driving circuits to output a dummy driving current; a dummy data line to apply a dummy data voltage to the plurality of dummy driving circuits; and a plurality of repair lines to electrically connect each of the organic light emitting diodes to at least one of the plurality of dummy driving circuits, wherein each of the dummy driving circuits corresponds to at least two of the repair lines, and each of the organic light emitting diodes is to be electrically connected to corresponding ones of the dummy driving circuits through corresponding ones of the repair lines.