A glass antenna (10, 20) arranged on a glass plate for a vehicle window comprising: a first feeding portion; a second feeding portion arranged apart from the first feeding portion, and electrically connected to an external grounding member; a first antenna conductor, an end of which is connected to the first feeding portion; a second antenna conductor, an end of which is connected to the second feeding portion; and a third antenna conductor, an end of which is connected to the second antenna conductor, and a fourth antenna conductor, an end of which is connected to the second feeding portion, wherein the first antenna conductor includes a first element extending in a horizontal direction of the glass plate, wherein the second antenna conductor includes a second element being located above the first antenna conductor, being located on a side where the first element extends with respect to the first feeding portion, and extending in the horizontal direction of the glass plate, wherein the third antenna conductor includes a third element being located below the second element, and being located on a side opposite the first feeding portion with respect to the first antenna conductor, wherein the third element has a first end portion which is connected to a branch point (b) of the second element, and a second end portion (c) which is a tip portion, and an L-shape is formed by a partial element extending in a vertical direction toward the branch point (b) on the second element, and a partial element extending in the horizontal direction, which is turned toward the first antenna conductor, including the tip portion (c), the second element including a third end portion (a) which is a tip portion, the branch point (b) being located at a position closer to the second feeding portion than is the third end portion (a), wherein the fourth antenna conductor forms an L-shape by a partial element extending in the vertical direction from the second feeding portion and a partial element extending in the horizontal direction to a tip portion (f), and includes a fourth element formed so as to interpose the first feeding portion and the first antenna conductor between the second antenna conductor and the fourth element, and the second element and the third element do not surround the first element. a first feeding portion; a second feeding portion arranged apart from the first feeding portion, and electrically connected to an external grounding member; a first antenna conductor, an end of which is connected to the first feeding portion; a second antenna conductor, an end of which is connected to the second feeding portion; and a third antenna conductor, an end of which is connected to the second antenna conductor, and a fourth antenna conductor, an end of which is connected to the second feeding portion, wherein the first antenna conductor includes a first element extending in a horizontal direction of the glass plate, wherein the second antenna conductor includes a second element being located above the first antenna conductor, being located on a side where the first element extends with respect to the first feeding portion, and extending in the horizontal direction of the glass plate, wherein the third antenna conductor includes a third element being located below the second element, and being located on a side opposite the first feeding portion with respect to the first antenna conductor, wherein the third element has a first end portion which is connected to a branch point (b) of the second element, and a second end portion (c) which is a tip portion, and an L-shape is formed by a partial element extending in a vertical direction toward the branch point (b) on the second element, and a partial element extending in the horizontal direction, which is turned toward the first antenna conductor, including the tip portion (c), the second element including a third end portion (a) which is a tip portion, the branch point (b) being located at a position closer to the second feeding portion than is the third end portion (a), wherein the fourth antenna conductor forms an L-shape by a partial element extending in the vertical direction from the second feeding portion and a partial element extending in the horizontal direction to a tip portion (f), and includes a fourth element formed so as to interpose the first feeding portion and the first antenna conductor between the second antenna conductor and the fourth element, and the second element and the third element do not surround the first element.