The present invention provides a stereoscopic image display apparatus. The stereoscopic image display apparatus includes a first projection element group, a second projection element group, and a reflecting optical system. The first projection element group includes a plurality of first projection elements operable to project first light fluxes in a first direction. The second projection element group includes a plurality of second projection elements operable to project second light fluxes in a second direction which is different from the first direction and in which the second light fluxes are directed to the first light fluxes. The reflecting optical system is operable to reflect the second light fluxes toward the first direction.