Location information sharing control system and location information sharing control device

A location information sharing control system enables detection of a location of an object person with precision while suppressing power consumption of a terminal carried by the object person, and enables a related person other than a specific manager to grasp the location of an object person. An object person terminal transmits identification information via short-range wireless communication. A detection terminal transmits the identification information transmitted from the object person terminal to the server. The server, on the basis of information transmitted from the detection terminal, specifies the location of the object person terminal, and manages the information on a location information sharing user who shares the information on the location of the object person terminal, and shares the information on the location of the object person terminal with the location information sharing user set to be able to share the information on the location of the object person terminal.