A plurality of RFID tags that store therein position information and other information are arranged at different locations, and a tag extracting device extracts at least one RFID tag among the RFID tags. The tag extracting device includes a reading unit that reads position information from a plurality of information-read RFID tags from among the plurality of RFID tags; a determining unit that determines, based on read position information, an area where the information-read RFID tags are concentrated; and an extracting unit that extracts at least one RFID tag from among the information-read RFID tags as a target RFID tag whose the other information is to be used in subsequent processing.