A valve timing control apparatus includes a driving side rotational member, a driven side rotational member arranged coaxially to the driving side rotational member, a fluid pressure chamber defined into an advanced angle chamber and a retarded angle chamber, a relative rotational phase adjusting mechanism controlling to selectively supply and drain a working fluid to and from the advanced angle chamber and the retarded angle chamber and adjusting a relative rotational phase of the driving side rotational member and the driven side rotational member, and a valve mechanism provided at the advanced angle chamber and establishing communication between an outside of the fluid pressure chamber and the advanced angle chamber in order to allow the driven side rotational member to advance when a fluctuated torque generated at a camshaft exceeds a torque applied to the driven side rotational member by the relative rotational phase adjusting mechanism.