The present disclosure has been made in an effort to provide a vehicular lamp that can adopt a low-priced material having a low heat-resisting temperature as a material for a reflector. A vehicular lamp includes a tail and stop lamp bulb and a reflector reflecting light from bulb to the front of the lamp, in a lamp chamber defined by a lamp body and a front cover. In addition, lamp body includes an opening for exposing the rear surface of reflector in the vicinity of tail and stop lamp bulb to the outside of the lamp chamber.