A wheel alignment control system for a vehicle having at least one pair of rear road wheels opposing each other in the transverse direction of the vehicle, for changing and setting a wheel alignment factor of the wheels in relation to a current speed of the vehicle. The wheel alignment factor to be set by the control system is a camber angle of the rear wheels, a static toeing angle of the rear wheels, or a dynamic toeing angle of the rear wheels. The dynamic toeing angle of changed to be set by changing a stroke characteristic of each of a pair of suspenion units respectively supporting the rear wheels, on which the stroke characteristic of an associated one of the suspension units exerts an effect such that, in accordance with a stroke length thereof, the toeing angle of a corresponding one of the rear wheels is varied.