A rear window glass for a vehicle, comprising: an electric heating type defogger installed in the rear window glass; and a glass antenna for receiving a vertically polarized wave of DAB, wherein the defogger includes a plurality of heater lines extending in a horizontal direction, the heater lines being arranged from a lower side of the rear window glass to an upper side of the rear window glass; and a plurality of bus bars extending in a vertical direction at a left edge portion of the window glass and at a right edge portion of the window glass, and that feed power to the plurality of heater lines, wherein the glass antenna is disposed at an upper portion or a lower portion with respect to the defogger, at least, at one of the left edge portion and the right edge portion of the rear window glass, wherein the glass antenna comprises: a core side feeding point; and a first antenna element extending from the core side feeding point in the horizontal direction, wherein, if a wavelength at a center frequency of a received frequency band in air is λ, a glass wavelength shortening coefficient is k, and a wavelength on the rear window glass is λ g =λ·k, a conductor length of the first antenna element is less than or equal to (1/6)·λ g, and wherein a distance between the first antenna element and a first heater line that extends linearly in the horizontal direction from the bus bar at the left edge portion of the window glass to the bus bar at the right edge portion of the window glass and that is closest to the first antenna element among the plurality of heater lines is less than or equal to (1/40)·λ g. an electric heating type defogger installed in the rear window glass; and a glass antenna for receiving a vertically polarized wave of DAB, wherein the defogger includes a plurality of heater lines extending in a horizontal direction, the heater lines being arranged from a lower side of the rear window glass to an upper side of the rear window glass; and a plurality of bus bars extending in a vertical direction at a left edge portion of the window glass and at a right edge portion of the window glass, and that feed power to the plurality of heater lines, wherein the glass antenna is disposed at an upper portion or a lower portion with respect to the defogger, at least, at one of the left edge portion and the right edge portion of the rear window glass, wherein the glass antenna comprises: a core side feeding point; and a first antenna element extending from the core side feeding point in the horizontal direction, a core side feeding point; and a first antenna element extending from the core side feeding point in the horizontal direction, wherein, if a wavelength at a center frequency of a received frequency band in air is λ, a glass wavelength shortening coefficient is k, and a wavelength on the rear window glass is λ g =λ·k, a conductor length of the first antenna element is less than or equal to (1/6)·λ g, and wherein a distance between the first antenna element and a first heater line that extends linearly in the horizontal direction from the bus bar at the left edge portion of the window glass to the bus bar at the right edge portion of the window glass and that is closest to the first antenna element among the plurality of heater lines is less than or equal to (1/40)·λ g.