A reading device including an identification information reading device which reads the identification information, a holding device which holds an identification information application member, a moving device which moves the holding device relative to the identification information reading device, and a control device which controls operations of the identification information reading device, the holding device, and the moving device. The control device causes the holding device to move using the moving device such that at least a portion of the holding region in which the holding device holds the identification information application member is a reading region to move the identification information application member and is configured to perform a first reading process which carries out a reading process of the identification information using the identification information in a state in which holding of the identification information application member using the holding device is released.