A rear glass according to the present invention is a rear glass that is attachable to a resin lift-up back door in a rear of a vehicle, the rear glass including a glass plate, a defogger that is arranged in the vicinity of a center of the glass plate in an up-down direction, and an AM antenna that is arranged upward of the defogger on the glass plate, in which the AM antenna includes a power supply part and an antenna element that extends from the power supply part.