In a vehicular visibility support apparatus, a camera positioned on a front portion that is either the left side or the right side of a vehicle provides an image of a view laterally behind the vehicle including a part of a face of the side of the vehicle as a camera image. An input portion accepts input manipulation to generate an input signal. A control portion trims a desired region in the camera image based on the input signal and provides a trimmed image. The control portion trims the camera image based on: a vertical reference line including a part of the face on the side of the vehicle in a trimmed image before the input manipulation is accepted by the input portion, and a horizontal reference line orthogonal to the vertical reference line; and a direction of movement for change to the desired region inputted to the input portion.