Provided are a deformable display device for displaying an image and a method of displaying an image. The method includes determining a current shape of the display device, capturing an image of a user of the display device, detecting a relative position of the user with respect to the display device, based on the captured image of the user, determining a visible region among an entire screen region of the display device, based on the determined current shape and the detected position, and displaying the image on the determined visible region.