An occupant protection apparatus has a panel which constitutes part of a passenger compartment side surface of an instrument panel and which is separatable from the instrument panel to move when at least a knee load of an occupant is inputted. There are a plurality of support members which face transverse end portions of the panel, respectively, and which have a rigidity higher than that of the instrument panel.
An absorption structure for absorbing energy applied from knees of an occupant includes: an energy absorbing knee protector provided substantially along a back surface of a lid outer member of a lid portion; a clearance concave portion formed on a region of the energy absorbing knee protector corresponding to a location of a side-locking mechanism, which is provided in the lid outer member and has a rod portion and a locking mechanism, substantially in a vehicle width direction and detouring the side-locking mechanism; an auxiliary knee protector provided substantially along the back surface of the lid outer member in a region within the clearance concave portion corresponding to the rod portion; and a small concave portion formed on the auxiliary knee protector substantially in the vehicle width direction and detouring the rod portion.