Abstract: A combination truck bed liner and fastening system for truck beds having one or more substantially vertical bed sidewalls and a front wall having a top rail with an outwardly facing lip. The combination includes a truck bed liner having a floor and integrally attached side and front walls extending upwardly therefrom to upper edges, and at least one slot formed adjacent that upper edge. At least one resilient snap-type clip having a hook end and stay end is provided, wherein compressive force is applied between the hook and stay ends in use by the inwardly biased nature of the clip. In attached condition, the hook end of the clip extends outwardly to lockingly overlie the truck bed rail, while the stay end overlies at least a portion of the upper edge of the liner and includes an outwardly protruding stay which interacts with the recess in the truck bed liner. As a result, the clip is compressively fitted over the upper edge of the liner and the rail to hold the liner in place without a need for drilling.