A foldable display device and a method of driving the foldable display device are provided. The foldable display device may include a first region, a second region, and a third region configured to bend along a folding axis between the first region and the second region. The foldable display device may include a display panel having a plurality of pixels; a touch sensor overlapping the third region and on an upper surface of the display panel; a first digitizer provided under the display panel to overlap the first region; and a second digitizer provided under the display panel to overlap the second region.