A roof antenna for a vehicle is provided having an antenna unit that receives radio waves, an antenna cover that covers the antenna unit, and an annular pad interposed between the antenna cover and the roof, wherein the pad includes a base that is retained at an inner side of a lower end of the antenna cover, an extension portion provided at a position opposing the lower end of the antenna cover, that extends from the base to an outer side of the lower end of the antenna cover, that can be tilted in a direction away from the lower end of the antenna cover, and that is formed from an elastic structure, and a lip formed at a tip of the extension portion and that is distanced from the outer side of the lower end of the antenna cover, and the extension portion is tilted to move away from the lower end of the antenna cover when a force in a direction away from the lower end of the antenna cover acts on the lip.