A glass antenna for a vehicle on or in a window glass including a defogger having a plurality of heater wires that run in parallel, the glass antenna includes: an antenna conductor; a first feeding portion; and a second feeding portion adjacent to the first feeding portion, wherein: the antenna conductor includes a first antenna conductor, which extends clockwise with the first feeding portion as a starting point, and a second antenna conductor, which extends counterclockwise at the outside of the first antenna conductor with the second feeding portion as a starting point; and the second antenna conductor includes a first element extending between the first antenna conductor and the defogger.