An electronic parking brake (EPB) may include: a housing unit; a motor unit installed in the housing unit; a deceleration unit connected to the motor unit so as to transfer power; a spindle unit connected to the deceleration unit so as to receive power from the deceleration unit, and moving a brake pad; a locking unit mounted in the housing unit and having a length which is adjusted to restrict operation of the motor unit; a sensing unit sensing an operation state of the motor unit; and a control unit receiving a sensing signal of the sensing unit and a parking signal, and controlling the operation of the motor unit.