A far side airbag apparatus for a vehicle for installation at a side of a frame of a backrest of a seat directed toward an inner center portion of the vehicle such that the far side airbag is expanded and deployed between at least two backrests arranged widthwise along the vehicle. The far side airbag includes an inner part directed toward an occupant seated in a direction opposite to a collision side of the vehicle upon vehicle collision and an outer part directed toward the inner center portion of the vehicle upon vehicle collision. When a vehicle collision occurs, for example, when a side inclination collision of the vehicle occurs, the occupant seated in opposition to the collision side of the vehicle may be prevented from abruptly moving toward the front portion and the inner center portion of the vehicle out of the protection range of the far side airbag. Thus, collision between occupants seated on a driver seat and an occupant seat can be effectively prevented.