In a lighting control system according to an embodiment, a storing unit stores a correspondence relation in which at least one of a plurality of type 2 groups is associated with each of type 1 groups. Methods of distribution of K luminaires are different in the type 1 groups and the type 2 groups. The control unit controls a lighting state of the type 1 groups indicated by an input control signal and subjects a lighting state of the type 2 groups associated with the type 1 groups to be controlled in the correspondence relation to associated control.