The invention is a system (1; 100; 200) for classifying hides (P; P', P") according to quality, comprising a frame (2) that supports a hide feeding line (3; 43) and a hide classification unit (25) comprising electronic processing and control means operatively connected to automatic measuring means (20, 21, 22) suited to measure the physical characteristics of the hides and arranged along the feeding line (3; 43), and to a manual unit (23) suited to assign a quality code chosen by the operator to each one of the hides. The feeding line (3; 43) comprises a plurality of distinct transport surfaces (4; 4', 4") suited to move the hides (P; P', P") forward according to an advance direction (F) towards a plurality of control stations (5; 5', 5"), each one of which comprises a hide control surface (6). The control stations (5; 5', 5") are connected in parallel to the feeding line (3; 43) through sorting stations (10; 40', 40") that are configured so as to selectively transfer the hides between the transport surfaces (4; 4', 4") and the control surface (6). The system comprises first power means (8) for moving the surfaces (4; 4', 4"; 6) forward and second power means (9) for the mutual movement of the surfaces (4; 4', 4"; 6), the power means being suited to allow the hides (P; P', P") to be selectively transferred between the transport surfaces (4; 4', 4") and the control surface (6) that belongs to a corresponding control station (5; 5', 5").