Fiber reinforced polymer (FRP) rebars are a successful solution for reinforcing concrete structures, especially when exposed to aggressive environments. In addition to their corrosion resistance, these rebars have other characteristics that make their application particularly attractive, such as their high strength-to-weight ratio and electromagnetic neutrality. However, for this solution to go from laboratory application to be applied in large scale in the field, careful investigations must be carried out to assess the behavior of the rebars in real concrete structures. This chapter presents some of the results obtained by the authors using hybrid FRP rebars combining glass and carbon fibers. To evaluate the behavior of the beams reinforced with FRP bars, the displacements, deformations, cracking patterns, and failure of all the beams were analyzed considering North American and Canadian standards. The proposed hybrid rebar solution presented good results.