A system for localizing a zone in space in relation to a predetermined point on a surface, wherein the surface is divided into nine zones of first rank obtained by dividing the surface into three parts in two different directions, a predetermined respective number from 1 to 9 is attributed to each of the zones of first rank, each zone of rank n, n being a whole number greater than or equal to 1, is divided successively into zones of rank n+1, a predetermined respective number from 1 to 9 being attributed to each of the zones of rank n+1 of a zone of inferior rank n, and a zone of rank n is position referenced by a zone reference sequence having n digits containing the number of the zone, the respective numbers of all of the zones of inferior rank, 1 to n-1, in which the zone is located, including means for determining the position reference sequence of a zone of rank n in which is located a zone to be localized in the surface, n being the maximum value such that the surface of the zone to be localized is included in the zone of rank n, and means for transmitting and/or receiving and/or displaying and/or using such a position referencing sequence.