An electronic anti-skid brake control system for regulating an individual wheel brake pressure independently of an operator controlled brake valve device in such a manner that when a predetermined brake pressure difference between a skidding and non-skidding wheel arises, the higher wheel brake pressure of the non-skidding wheel is reduced. Pressure transducers produce an electrial signal representative of each wheel brake pressure. These signals are connected to different inputs of a pair of differential amplifiers, which algebraically sum the signals to provide different polarity output signals according to the difference in wheel brake pressure. These difference signals are then compared at operational amplifiers with a predetermined bias signal that establishes the differential pressure at which at least one operational amplifier is operated to control modulator valve means associated with the non-skidding wheel.