A glass antenna for a vehicle, comprising: a feeding part to be provided in or on a window glass for the vehicle; and an antenna conductor (500, 600, 700) to be provided in or on the window glass, the antenna conductor (500, 600, 700) including: a first antenna element, extending in a first direction from the feeding part; a second antenna element, extending in a second direction substantially perpendicular to the first direction from an end of extension of the first antenna element; and a third antenna element, extending in a third direction opposite to the first direction from an end of extension of the second antenna element; characterized in that the antenna conductor (500, 600, 700) further includes a fourth antenna element, extending in the second direction from an end of extension of the third antenna element, and in that the first direction of the first antenna element is substantially perpendicular to a horizontal direction when the window glass is mounted on a vehicle; a conductor length of the first antenna element is 70 mm through 150 mm; a conductor length of the third antenna element is 60 mm through 80 mm; and a total length of the antenna conductor (500, 600, 700) is 230 mm through 380 mm. a feeding part to be provided in or on a window glass for the vehicle; and an antenna conductor (500, 600, 700) to be provided in or on the window glass, the antenna conductor (500, 600, 700) including: a first antenna element, extending in a first direction from the feeding part; a second antenna element, extending in a second direction substantially perpendicular to the first direction from an end of extension of the first antenna element; and a third antenna element, extending in a third direction opposite to the first direction from an end of extension of the second antenna element; characterized in that the antenna conductor (500, 600, 700) further includes a fourth antenna element, extending in the second direction from an end of extension of the third antenna element, and in that the first direction of the first antenna element is substantially perpendicular to a horizontal direction when the window glass is mounted on a vehicle; a conductor length of the first antenna element is 70 mm through 150 mm; a conductor length of the third antenna element is 60 mm through 80 mm; and a total length of the antenna conductor (500, 600, 700) is 230 mm through 380 mm. a first antenna element, extending in a first direction from the feeding part; a second antenna element, extending in a second direction substantially perpendicular to the first direction from an end of extension of the first antenna element; and a third antenna element, extending in a third direction opposite to the first direction from an end of extension of the second antenna element; characterized in that the antenna conductor (500, 600, 700) further includes a fourth antenna element, extending in the second direction from an end of extension of the third antenna element, and in that the first direction of the first antenna element is substantially perpendicular to a horizontal direction when the window glass is mounted on a vehicle; a conductor length of the first antenna element is 70 mm through 150 mm; a conductor length of the third antenna element is 60 mm through 80 mm; and a total length of the antenna conductor (500, 600, 700) is 230 mm through 380 mm.