A lamp device-integrated rearview mirror 30 includes a mirror member 34 oriented toward the rear side of a vehicle body and a single bulb 40 provided in a housing 31 attached to the vehicle body. The lamp device-integrated rearview mirror may also include a reflecting member 35 configured to reflect the light emitted from the bulb 40 toward the rear side of the vehicle body and a reflector 36 configured to reflect the light toward the front side of the vehicle body. The reflecting member 35 may be provided on the rear side of a lens 32 attached to the housing 31 to transmit the irradiation light, and the reflector 36 may be provided inside the housing 31. The mirror member 34 may be fitted in the opening portion of the housing 31.