An illumination apparatus including a light-emitting unit and an apparatus-holding section. The light-emitting unit includes a light guide plate with a center portion being opened, a light source that inputs light from a side of an inner wall of the light guide plate, and a reflective film formed on a side of an upper surface of the light guide plate to reflect light propagated in the light guide plate. The light-emitting unit outputs light from a light output surface in opposite to the upper surface of the light guide plate. The apparatus-holding section detachably holds an electronic apparatus, is capable of removing the electronic apparatus from a side of an output direction of light from the light output surface, and includes a center of a surface parallel to the light output surface, which is positioned inside a light output area of the light output surface.