A self-centering clamp having three jaws, for the industrial automation field is provided and is adapted to equip robotic arms. One of the jaws is controlled by a cursor directly activated by the clamp actuator, which can be electric, pneumatic, oleopneumatic, etc. The other two jaws are controlled by corresponding transfer levers kinematically coupled to the cursor. The levers rotate in a lying plane parallel to the handling plane of the jaws and the cursor.