Reinforced Concrete (RC) structures are susceptible to the corrosion of steel reinforcing bars in aggressive environments. In the last few decades, Glass Fibre-Reinforced Polymer (GFRP) bars have emerged as a suitable replacement for the steel reinforcing bars in RC structures due to their corrosion resistance, chemical resistance, and high strength-to-weight ratio. The response of GFRP bar Reinforced Concrete (GFRP-RC) beams varies significantly from the behaviour of steel bar reinforced concrete beams. This paper numerically investigates the response of GFRP-RC beams under static loads. The results of the numerical modelling have been validated against the experimental results of six GFRP-RC beams and were found to be in good agreement with the experimental results. Also, a parametric study is carried out to investigate the effects of the reinforcement ratio, compressive strength of concrete, and shear span to effective depth ratio on the response of GFRP-RC beams under static loads.