A distance measuring apparatus is installed in a thing and a distance between the thing and a measuring target varies. The distance measuring apparatus includes a plurality of imaging devices; a first distance acquisition part that acquires a first distance to the measuring target based on respective sets of image data taken by the plurality of imaging devices; a second distance acquisition part that acquires a second distance to the measuring target based on a reflected wave of an electromagnetic wave irradiated onto the measuring target; and a holding member that holds the plurality of imaging devices and the second distance acquisition part.