To provide an apparatus and a system for managing the position of a moving body, which can be constructed at a low cost.

A beam transmitter 2 installed on the upper part of the moving body 1 and for transmitting a beam of an infrared ray, a sonic wave, a radio wave, or the like toward a ceiling, an RFID (radio frequency identification) tag 3 provided on a proper place of the ceiling and for generating an individual signal upon receiving the beam, a receiver 4 for receiving the RF signal from the RFID tag, and a computer 5 for determining the position of the moving body from the received ID of the tag are provided.