A system, apparatus, and method for displaying a 3D image and a location tracking device are provided. A location tracking unit receives an image frame acquired by capturing an image of a user, detects a location of the user using the received image frame, calculates a movement velocity of the user using the detected location of the user and at least one of previously detected locations of the user, predicts a location of the user at time point which a predetermined time elapses using the detected location of the user and the calculated movement velocity, and calculates a 3D image change amount based on the predicted location of the user. An image processing unit performs a control operation to display a 3D image based on the calculated 3D image change amount.