This invention provides a stereoscopic display without using eyeglasses which does not require a means to switch images for left and right eyes and by which each viewer can observe a stereoscopic image even when many persons observe an image. The display includes a projector for a left eye 1L, a projector for a right eye 1R, and lenticular lens on a light incident side 2a which forms images for left and right eyes projected from each projector on a diffusing plate 2b alternately. A shutter means 4L, 4R include a plurality of shutter regions which can switch between light transmission and light shading and are placed laterally, and form a narrow-width image light reaching region, of which width is less than that of the shutter region, in each image forming region on the diffusing plate. Lenticular lens on a light incident side 2c guides an image in a narrow-width image light reaching region in an image forming region for a left eye to a viewer's left eye and an image in a narrow-width image light reaching region in an image forming region for a right eye to a viewer's right eye. A shutter control means 5 controls light transmission and light shading of said shutter region on the basis of output results from a sensor which detects a viewer's position.