In this paper, finite element modeling and nonlinear analysis studies for reinforced concrete deep beams strengthened in shear using FRP sheets and strips, illustrated using the general-purpose ANSYS computer program. The parametric shear studies include the effect of FRP parameters (thickness of FRP sheets and strips, angle of FRP sheets and strips, length of FRP sheets, spacing between FRP strips and FRP material type) on the shear response of strengthened deep beams. It is predicted that the increase of thickness of FRP sheets or strips improves the deep beam shear capacity and the secant stiffness. Strengthening deep beam with CFRP upgrades the shear capacity more than strengthening with GFRP. An enhancement in the shear capacity and secant stiffness is noticed by strengthening with FRP, applied perpendicular to the predicted shear crack. The shear strengthening performance of FRP sheets or strips increases as the strengthening length increases.