A driving support apparatus includes: an image sensing device that photographs side region of a vehicle and rearward region of a vehicle while altering an angle of view; a display unit that displays video images photographed by the image sensing device so as to be visible to a driver of the vehicle; a display determination device that determines a running state of the vehicle, and determines whether or not an alteration of the display angle of view is required; and an angle of view adjustment device that switches the angle of view of the image sensing device, in accordance with a display method decided by the display determination device, between either one of a wide angle that enables the side region and the rearward region to be photographed, and a narrow angle that only allows the rearward region to be photographed.