An organic light-emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes a plurality of pixels, a luminance measuring unit, a current measuring unit, and a compensation data generator. The luminance measuring unit measures the luminance of each pixel and generates luminance information corresponding to the measured luminances. The current measuring unit measures the current output from each pixel and generates current information corresponding to the measured currents. The compensation data generator generates compensation data including a compensation value for each pixel based on the luminance information and/or the current information.