An apparatus and method for controlling autonomous vehicle platooning are disclosed. The apparatus for controlling autonomous vehicle platooning includes a frame format configuration unit, a synchronization unit, and a contention window assignment unit. The frame format configuration unit configures the format of a frame included in a communication channel applicable to the control of autonomous vehicle platooning. The synchronization unit synchronizes a plurality of vehicles with one another using the frame so that the vehicles can perform the autonomous vehicle platooning. The contention window assignment unit assigns the different contention window values of a slot for management of the frame to the respective synchronized vehicles. The control is performed using the assigned contention window values so that the vehicles can participate in the autonomous vehicle platooning.