An onboard vehicle information notifying apparatus has a moving body position acquiring section that acquires a moving body position for at least one moving body existing in a vicinity of a host vehicle and that acquires map information of the vicinity of the host vehicle. The map information is divided into a plurality of unit regions, with each of the unit regions being a notification necessary region when the moving body exists in the unit region. An information acquiring section acquires an advancement speed and an advancement direction of the host vehicle, and a prescribed movement speed of the moving body. An information providing zone setting section sets an information providing zone within which existence of the moving body should be reported. The information notifying section reports the existence of the moving body when the information providing zone overlaps with the notification necessary region.