There is provided an IC tag that is simple in structure and in which concentration of stress in a portion near the connection of an IC chip and an antenna part can be reduced. The IC tag 100 includes a film member 10, an antenna part 20 provided on the film member 10, an IC chip 30 mounted on the film member 10 in such a way as to be connected with the antenna part 20. A slit 51 is provided at a position away from the antenna part 20 in the region on the film member 10 near the site at which the IC chip 30 is mounted, and a covering 41 made of an elastic material is provided to cover at least the entire area of the IC chip 30 and a portion of connection of the IC chip 30 and the antenna part 20.