Folding head for a corn-shelling machine and/or combine harvester suitable for performing the shelling of cobs, the head extending in a transversal direction (Y-Y), perpendicular to a longitudinal direction (X-X) of advancement of the head in the working step, and comprising at least one sheller roller rotating in relation to a relative rotation axis and fitted with blades to pull a stalk of a corn on the cob plant downwards, - the head comprising a central portion extending along the main transversal direction (Y-Y) between opposite transversal ends (16, 18)and two lateral portions (20, 22) positioned on opposite sides to the central portion at each transversal end (16, 18) and aligned with the central portion in a working condition of the head, - each lateral portion (20, 22) extending from an inner end, alongside the corresponding transversal end (16, 18) of the central portion in a working configuration, to an external end, opposite the inner end in relation to the transversal direction (Y-Y), in a working configuration, - the head comprising drive means for moving the lateral portions (20, 22) so as to pass from a working configuration wherein the lateral portions (20, 22) are alongside and aligned with the central portion, to a folded configuration wherein the lateral portions (20, 22) are at least partially folded and overlapping the central portion, - each lateral portion (20, 22) is operatively connected to the central portion by means of the interposition of connection means comprising a relative arm which connects each lateral portion (20, 22) to the central portion, - wherein the connection means comprise a first hinge defining a first rotation axis (R') parallel to the longitudinal direction (X-X) of advancement of the head, so as to separate and raise the lateral portions (20, 22) in relation to the central portion, and characterised in that it comprises a second hinge defining a second rotation axis (R"), perpendicular to the first rotation axis (R'), so as to rotate the lateral portions (20, 22) in reciprocal approach towards a centreline plane (M-M) of the central portion and to position them on a plane substantially perpendicular to said transversal direction (Y-Y). - the head comprising a central portion extending along the main transversal direction (Y-Y) between opposite transversal ends (16, 18)and two lateral portions (20, 22) positioned on opposite sides to the central portion at each transversal end (16, 18) and aligned with the central portion in a working condition of the head, - each lateral portion (20, 22) extending from an inner end, alongside the corresponding transversal end (16, 18) of the central portion in a working configuration, to an external end, opposite the inner end in relation to the transversal direction (Y-Y), in a working configuration, - the head comprising drive means for moving the lateral portions (20, 22) so as to pass from a working configuration wherein the lateral portions (20, 22) are alongside and aligned with the central portion, to a folded configuration wherein the lateral portions (20, 22) are at least partially folded and overlapping the central portion, - each lateral portion (20, 22) is operatively connected to the central portion by means of the interposition of connection means comprising a relative arm which connects each lateral portion (20, 22) to the central portion, - wherein the connection means comprise a first hinge defining a first rotation axis (R') parallel to the longitudinal direction (X-X) of advancement of the head, so as to separate and raise the lateral portions (20, 22) in relation to the central portion, and characterised in that it comprises a second hinge defining a second rotation axis (R"), perpendicular to the first rotation axis (R'), so as to rotate the lateral portions (20, 22) in reciprocal approach towards a centreline plane (M-M) of the central portion and to position them on a plane substantially perpendicular to said transversal direction (Y-Y).