A rear window glass mountable to a flange of an opening section of an automotive vehicle, comprising: a glass antenna disposed at an upper section of a defogger of the rear window glass, comprising: an FM first antenna receiving an FM broadcasting wave or both of the FM broadcasting wave and an AM broadcasting wave; an FM second antenna performing a diversity reception of the FM broadcasting wave together with the first FM antenna; a DAB purpose antenna receiving a DAB broadcasting wave, wherein the FM first antenna is disposed in such a way that a blank space formed by an FM first antenna element and a flange end edge of the rear window glass is disposed at an upper part of the defogger when the rear window glass is attached to the automotive vehicle, the FM second antenna and the DAB purpose antenna are disposed on the blank space, the FM second antenna includes: an FM second antenna feed point disposed at a side section of the rear window glass; and an FM second antenna element, the FM second antenna element includes: an FM second antenna first strip; and an FM second antenna second strip, and the FM second antenna first strip has one end connected to the FM second antenna feed point, is extended in a direction away from the FM second antenna feed point, and has the other end connected to a tip or to a midway section through the FM second antenna second strip, characterized in that the FM second antenna first strip and the FM second antenna second strip of the FM second antenna are overlapped on an antenna element constituting the DAB purpose antenna, the overlap is a close lap of the FM second antenna first strip and the FM second antenna second strip over the antenna element constituting the DAB purpose antenna with a predetermined length and with a predetermined interval, and the antenna element of the DAB purpose antenna on which the FM second antenna first strip and the FM second antenna second strip are overlapped is a ground side antenna element connected to a ground side feed point of the DAB purpose antenna, and the antenna element constituting the DAB antenna and the antenna element are overlapped to each other with an interval ( m) of 3 mm or longer but 10mm or shorter. a glass antenna disposed at an upper section of a defogger of the rear window glass, comprising: an FM first antenna receiving an FM broadcasting wave or both of the FM broadcasting wave and an AM broadcasting wave; an FM second antenna performing a diversity reception of the FM broadcasting wave together with the first FM antenna; a DAB purpose antenna receiving a DAB broadcasting wave, an FM first antenna receiving an FM broadcasting wave or both of the FM broadcasting wave and an AM broadcasting wave; an FM second antenna performing a diversity reception of the FM broadcasting wave together with the first FM antenna; a DAB purpose antenna receiving a DAB broadcasting wave, wherein the FM first antenna is disposed in such a way that a blank space formed by an FM first antenna element and a flange end edge of the rear window glass is disposed at an upper part of the defogger when the rear window glass is attached to the automotive vehicle, the FM second antenna and the DAB purpose antenna are disposed on the blank space, the FM second antenna includes: an FM second antenna feed point disposed at a side section of the rear window glass; and an FM second antenna element, the FM second antenna element includes: an FM second antenna first strip; and an FM second antenna second strip, and the FM second antenna first strip has one end connected to the FM second antenna feed point, is extended in a direction away from the FM second antenna feed point, and has the other end connected to a tip or to a midway section through the FM second antenna second strip, characterized in that the FM second antenna first strip and the FM second antenna second strip of the FM second antenna are overlapped on an antenna element constituting the DAB purpose antenna, the overlap is a close lap of the FM second antenna first strip and the FM second antenna second strip over the antenna element constituting the DAB purpose antenna with a predetermined length and with a predetermined interval, and the antenna element of the DAB purpose antenna on which the FM second antenna first strip and the FM second antenna second strip are overlapped is a ground side antenna element connected to a ground side feed point of the DAB purpose antenna, and the antenna element constituting the DAB antenna and the antenna element are overlapped to each other with an interval ( m) of 3 mm or longer but 10mm or shorter.