To suppress pitching and rolling movement of a vehicle without sacrificing controllability in suppressing the vertical oscillation of a vehicle.

In this damping force control system, a first target damping force of each wheel for suppressing a vehicle from oscillating in the heaving direction of the vehicle body is calculated based on a vehicle single-wheel model in reference to the skyhook theory (S102). Then a second target damping force of each wheel for suppressing the vehicle from oscillating in the pitching direction is calculated based on a vehicle front-rear wheel model (S104). Further a third target damping force of each wheel for suppressing the vehicle from oscillating in the rolling direction is calculated based on a vehicle left-right wheel model (S106). Then among the first to third target damping forces, the one having the largest absolute value is selected for each wheel (S108). Finally damping force at each wheel position is set to be the selected target damping force as previously selected (S110-116).