Abstract: Locking system for sliding-pivoting doors/panels (18 and 19) composed of: A guiding mechanism of the panels (18 and 19) placed in the sliding top track (21) and composed of a cap (8), an array of slots (9) and a guiding inverted “T” which complements the array of slots (9) which can be replaced by a protusion (25) of the top pivot part (24). A locking and unlocking mechanism of the panels (18 and 19) composed of a “U” shape profile (1) fixed to the wall, “U” shape moving profile (4) a pair of elbow shape parts (2), a handle (3), two blocks (5) and two plates (6) being the width of the base (23) of the profile (1) slightly bigger than the base (22) of the moving profile (4) and fitting the “U” moving profile (4) into the profile (1).