An organic light emitting display includes a first display unit having pixels coupled to odd scan and data lines, a second display unit having pixels coupled to even scan and data lines, a third display unit having pixels coupled to the odd scan lines and even data lines, and a fourth display unit having pixels coupled to the even scan lines and odd data lines. A timing controller extracts image data corresponding to each of the display units from inputted image data of one frame. A scan driver sequentially supplies a scan signal to the scan lines in each of four sub-frame periods of one frame period. A data driver converts extracted image data of each of the display units into corresponding data voltages, and supplies the corresponding data voltages to respective ones of the display units through the data lines for respective sub-frame periods of the one frame period.