A valve timing control apparatus allows attachment of both a driven device and a valve timing control apparatus to one end of a cam shaft. The apparatus includes a drive member rotatable in synchronism with a crank shaft of an internal combustion engine, a driven member 4 disposed coaxially with the drive member and a fastener extending through the driven member from one axial end to the other axial end thereof. The fastener is fastened to a cam shaft of the internal combustion engine at the other axial end of the driven member, thereby fixing the driven member to the cam shaft. A rotation-transmitting groove is provided for attachment to a driven device The groove is integrally formed at one axial end of the fastener or in a member clamped in place by the fastener.