A vehicle lamp has first and second lamp chamber portions each including: a light source; a casing having opening and portion for reflecting light emitted from the light source; and lens portion for closing the opening of the casing; the first and second lamp chamber portions each forming lamp chamber partitioned with the casing and the lens portion, wherein the lens portion of the first lamp chamber portion passes light through substantially forward or backward from a vehicle; at least a part of the second lamp chamber portion is disposed within the lamp chamber of the first lamp chamber portion; and the second lamp chamber portion overlaps with the light source of the first lamp chamber portion in the substantially longitudinal direction.