The vehicle brake-rotor lock includes a mounting bracket, and a lock mechanism, including at least one deadbolt shaft, which is preferably made of steel, stainless steel, titanium, tungsten, boron, or any other dense metal, used to mechanically immobilize the vehicle. The bracket is preferably permanently attached to the protected vehicle. In a locked state, the deadbolt shaft extends through a cross-drilled ventilation hole or slot on the brake rotor of the vehicle, thereby preventing rotation of the brake rotor and the wheel. The lock mechanism preferably prevents any forward or rearward movement of the vehicle when engaged to allow for a heightened security for any vehicle using a disc braking system. In one embodiment, the lock mechanism is mechanically actuated. In another embodiment, the lock mechanism is electronically actuated.