A luminaire recognition device in a lighting system having multiple luminaires with a dimming function installed in a predetermined area is configured to be arranged at a predetermined location in an area for associating identification information and installation site of each luminaire. The luminaire recognition device includes a controller configured to control an illuminance of each luminaire through communication, a detector configured to detect a brightness at the predetermined location, a memory configured to store correlation information between a brightness and distance from the predetermined location to each luminaire, and a processor configured to change an illuminance of a luminaire to be searched by a defined amount with the controller, calculate a change in brightness detected by the detector, and recognize the luminaire to be searched among the multiple luminaires, based on the change and the correlation information.