A parking brake (1) comprises a disc (2) coaxially fixable to the wheel of a vehicle; locking means (4) associated with the disc (2), the disc (2) has at least a seat (3) formed on an edge (2a); locking means (4) comprising a pin (5) associated with the disc (2) and switchable between a locking configuration, in which the pin (5) interferes with the seat (3), and an unlocking configuration in which the pin (5) is removed from the seat (3).