Abstract: A refereeing aid system for ball games in which refereeing is performed by a referee in charge together with at least one auxiliary judge, both present on the playing field, includes a communications device held by the referee enabling refereeing data to be input and communicated to a management device disposed in the vicinity of the playing field and connected to a central computer which centralizes data from a plurality of management devices present at different playing fields. The management device also include an input for confidential personal data relating to each participant in the game.