Numerical Simulation of RC Beams Reinforced with Internal Steel Trusses. This paper presents numerical investigation on the overall structural behavior of reinforced concrete beams provided with different configurations of embedded steel trusses as web reinforcement. Five specimens having the same dimensions as well as the longitudinal reinforcement were modeled using ABAQUS software. One beam was reinforced with traditional vertical web reinforcement, while the remaining beams were provided with different truss' layout. The main studied criteria were the ultimate failure load, the cracking load, the cracking pattern, principle tensile strain vectors on stirrups and the load versus the mid-span deflection curve. The numerical results showed that using embedded steel truss as web reinforcement resulted in increased the ultimate capacity of the beam by range of (4%-8%) compared to that of the control beam reinforced with traditional vertical stirrups. Keywords: ABAQUS software, Embedded Steel Truss, Finite Element Modeling, Reinforced Concrete Beams, Flexural.