A multi-view autostereoscopic image display and a method of controlling an optimal viewing distance thereof are provided. The multi-view autostereoscopic image display includes a display panel displaying multi-view image data, a display panel driver writing the multi-view image data, a 3D optical element separating the optical axes of the multi-view image data, a viewing distance sensing unit sensing the positions of both eyes of a viewer, and a viewing distance extension controller that detects viewing zones where both eyes of the viewer are located by comparing the positions of both eyes of the viewer with positional information of predefined viewing zones, and selectively converts at least some of the multi-view image data according to a change in the positions of the viewing zones where both eyes of the viewer are located.