A vehicular lamp used in a vehicle, includes: a light source for emitting light in accordance with power given thereto; a lamp body for accommodating the light source and protecting the light source from water; a first resistor provided in the outside of the lamp body and connected in series with the light source; and a current limiting circuit, provided in the inside of the lamp body, for preventing an excess current supplied to the light source in a case where dump surge occurs in a supplied voltage or current to be supplied to the light source.