A folding chair comprising: - a seat and a backrest carried by a folding structure, wherein the folding structure comprises a first structure defining a pair of front legs and a second structure defining a pair of rear legs, articulated to each other about a transverse axis by means of a pair of joints and movable relative to one another between an open position and a closed position, wherein the first structure comprises two first side elements and the second structure comprises two second side elements and wherein each of said joints comprises a first half-joint fixed to a respective first side element and a second half-joint fixed to a respective second side element, wherein the first and the second half-joints (70, 72) are rotatable relative to one another about said transverse axis, wherein the first structure comprises a pair of rods mounted within respective first side elements and movable between a raised position and a lowered position, wherein said joints cooperate with respective rods for controlling the movement of the rods from the raised position to the lowered position, and vice versa, as a consequence of the relative movement of the first structure and the second structure from the open position to the closed position, and vice versa, and wherein the backrest comprises two supports each of which is articulated to a respective first side element and to a respective rod, so that the movement of said rods from the raised position to the lowered position, and vice versa, controls the movement of the backrest with respect to the first structure between a position of use and a storage position, and vice versa. - a seat and a backrest carried by a folding structure, wherein the folding structure comprises a first structure defining a pair of front legs and a second structure defining a pair of rear legs, articulated to each other about a transverse axis by means of a pair of joints and movable relative to one another between an open position and a closed position, wherein the first structure comprises two first side elements and the second structure comprises two second side elements and wherein each of said joints comprises a first half-joint fixed to a respective first side element and a second half-joint fixed to a respective second side element, wherein the first and the second half-joints (70, 72) are rotatable relative to one another about said transverse axis, wherein the first structure comprises a pair of rods mounted within respective first side elements and movable between a raised position and a lowered position, wherein said joints cooperate with respective rods for controlling the movement of the rods from the raised position to the lowered position, and vice versa, as a consequence of the relative movement of the first structure and the second structure from the open position to the closed position, and vice versa, and wherein the backrest comprises two supports each of which is articulated to a respective first side element and to a respective rod, so that the movement of said rods from the raised position to the lowered position, and vice versa, controls the movement of the backrest with respect to the first structure between a position of use and a storage position, and vice versa.