A captured image display system that displays an image captured by a camera mounted in an automobile to capture a rear side of the automobile on a display disposed at a position visible by a driver of the automobile, the captured image display system characterized by: a display candidate image generation means configured to generate a plurality of display candidate images which are a plurality of images of a following car captured by the camera with mutually different capturing setting values while using a gain of the camera as the capturing setting value, the following car having a plurality of light sources, and the plurality of candidate images comprising a first plurality of candidate images containing separated images of the plurality of light sources and at least one second candidate image in which the plurality of light sources appear as a continuous high-luminance image; and a combined image display means configured to display a combined image on the display, the combined image obtained by combining the first plurality of candidate images only, wherein the display candidate image generation means is further configured to: search a maximum capturing setting value with which the camera is able to capture the plurality of light sources as the separated images, among capturing setting values within each range of preset ranges of a plurality of mutually different capturing setting values; and obtain the combined image by combining images captured by the camera with maximum capturing setting values searched for each range of the preset ranges. a display candidate image generation means configured to generate a plurality of display candidate images which are a plurality of images of a following car captured by the camera with mutually different capturing setting values while using a gain of the camera as the capturing setting value, the following car having a plurality of light sources, and the plurality of candidate images comprising a first plurality of candidate images containing separated images of the plurality of light sources and at least one second candidate image in which the plurality of light sources appear as a continuous high-luminance image; and a combined image display means configured to display a combined image on the display, the combined image obtained by combining the first plurality of candidate images only, wherein the display candidate image generation means is further configured to: search a maximum capturing setting value with which the camera is able to capture the plurality of light sources as the separated images, among capturing setting values within each range of preset ranges of a plurality of mutually different capturing setting values; and obtain the combined image by combining images captured by the camera with maximum capturing setting values searched for each range of the preset ranges. search a maximum capturing setting value with which the camera is able to capture the plurality of light sources as the separated images, among capturing setting values within each range of preset ranges of a plurality of mutually different capturing setting values; and obtain the combined image by combining images captured by the camera with maximum capturing setting values searched for each range of the preset ranges.