Abstract: Modular sectional structure, particularly suitable for creating furniture pieces, furniture complements or the like, for example tables, small tables, shelvings, expositors, and the like, or for the creation of open or closed areas, for example stands, boxes for fairs, exhibitions, and the like, or for the creation of partition walls, and the like, characterized in that it comprises vertical uprights, each of which is provided in at least one position of at least one lateral fitting for the preferably removable connection of at least one horizontal transversal member, by which it can be connected with at least another vertical upright.