Abstract: The present invention relates to a modular fence for enclosures and signs, preferably made of a plastic material and indistinctly usable both indoors and outdoors, offering an optimal degree of stability, being easily stackable when inoperative and in turn being easily coupled to other modules or fences used in the enclosure or signs. The fence has an essentially planar vertical face oriented towards the pedestrian sidewalk area, preventing obstacles that could be the cause of accidents, and is provided with a lighting system facilitating both seeing the fence io itself and drawing the attention of the pedestrians to the information or advertisement borne thereon.