An automobile antenna capable of preserving a good outward appearance of an antenna shape intact while possessing favorable waterproof and dustproof qualities is provided.An antenna mounted on an outside sheet panel of an automobile and comprising a base member that supports electrical parts for reception and transmission, a cover member that receives the electrical parts for reception and transmission, and a pad member made of an elastic material, and wherein the pad member is fitted internally into the cover member while covering an underside and an outer peripheral portion of the base member.