A stereoscopic image display device includes a display panel, a scan driver, and a data driver. The display panel includes pixels coupled to data lines and scan lines. The pixels do not emit light during a data pre-addressing period and pixels emit light during a data addressing period. The scan driver supplies scan signals to the scan lines. The data driver supplies data voltages to the data lines in synchronization with the scan signals. The scan driver supplies first scan signals to the scan lines during the data pre-addressing period, and supplies second scan signals to the scan lines during the data addressing period. Each of the first scan signals has one pulse, and each of the second scan signals has a plurality of pulses.