Abstract: A stereoscopic image display apparatus is disclosed with which the discontinuities in the parallax images viewed from any viewing region can be alleviated, and which is capable of performing high-quality stereoscopic display. The stereoscopic image display apparatus includes a display device synthetically displaying a plurality of parallax images by different pixels, and an optical separating member in which a plurality of state-selective regions are arranged, which have properties of selectively transmitting light with different states. The optical separating member directs, of the light from the pixels, the light transmitted through the state-selective regions to a different viewing region for each parallax image.