An RFID tag includes: a flexible, sheet-shaped substrate; an antenna pattern that is formed on the substrate; an IC chip that is mounted on the substrate and that is connected to the antenna pattern; an adhesive member that adheres the IC chip to the substrate; and a reinforcement member that covers the IC chip and the adhesive, and that is at a position such that a central portion of the reinforcement member is offset along a length direction of the substrate with respect to the IC chip and the adhesive member.