The use of fiber reinforced polymer (FRP) materials in civil engineering structures is relatively new. FRP reinforcing bars are starting to be used in lieu of conventional steel reinforcing bars where improved corrosion resistance is required in soil nailed reinforced earth retaining structures. Presently, there is only a relatively small body of knowledge on numerical modeling techniques and the response of FRP reinforcing nails under load. This paper provides an overview of research completed to date on both steel and FRP reinforced soil nails, and an outline of planned future research.