The invention relates to the electrotechnical industry. Said invention makes it possible to reduce the production cost of, and improve the quality of, gas-discharge reflector lamps. The inventive gas-discharge reflector lamp comprises a light bulb and a burner arranged on current leads into the bulb. At least one half of the bulb's internal surface is coated with a reflective layer in such a way that a plane crossing the parallel edges thereof is parallel to the longitudinal axis of the burner. The bulb is embodied in the form of an ellipsoid. In the area delimited by the bulb neck and dome, the transversal edges of the reflecting layer are located on the cross-sections where the bulb neck and dome gradually transform into the ellipsoidal section, The plane passing through the longitudinal edges of the reflecting layer are located from the bulb axis at a distance H and falls in the range of 0.04-0.11 of the bulb maximum diameter D. The burner is positioned in such a way that, on the cross-section passing through the center of the bulb ellipsoid, the ratio between a distance I from the burner axis to the closest surface of the reflecting layer and a distance L from the burner axis to the edge of the reflecting layer located on the longitudinal section ranges from 0.56 to 0.68. A least one current lead is arranged between the burner and the reflecting layer on the longitudinal plane of symmetry.