The present invention to provide an occupant protection apparatus for a vehicle that improves the protection of an occupant who falls forward while being inclined toward the longitudinal centerline side of the vehicle. The occupant protection apparatus (10) for a vehicle includes: a main bag (24) that, when an occupant (M) who is seated in a seat (7) of the vehicle (1) is about to fall forward, is deployed in front of the occupant and is capable of supporting the head and upper body of the occupant; a sub-bag (25) that is deployed on a longitudinal centerline side of the head of the occupant (M) who plunges into the main bag (24); and a center bag (42) that is deployed in the center in a lateral direction of the vehicle. The sub-bag (25) is deployed on a door side of the center bag (42) and, when subjected to a load of the head of the occupant (M) who plunges into at least the main bag (24) while being inclined toward the longitudinal centerline side, comes into contact with the lateral side of the center bag (42) on the door side so as to overlap it.