Abstract: A mud flap extender for mounting on the rear quarter panel behind each rear wheel or wheels of a truck or other vehicle and suspending a mud flap a sufficient distance rearwardly of the wheel(s) to prevent the wheel(s) from engaging the mud flap and tearing the mud flap from the vehicle frame when the vehicle is operated in reverse. Each mud flap extender is characterized by a fender module that matches the curvature of the vehicle rear quarter panel and typically mounts on the wheel well plate of the rear quarter panel and an angle-iron mount plate having a top flange for engaging the fender module and a bottom flange for mounting a mud flap which is suspended downwardly from the fender module in spaced relationship with respect to the rear wheel or wheels of the vehicle.