The present study uses finite element analysis to examine the effectiveness of square footing positioned on geocell-reinforced aggregates overlaying poor clayey soil. The three-dimensional honeycomb geometry of the geocell has simulated using interface component with a continuous membrane element in FEM based Abaqus software. The Mohr–Coulomb material model employed for the aggregates lying in the base layer and the Ducker-Pager material model was used for the clay soil. A series of numerical analysis programs were performed by varying the thickness of the aggregates layer, height of the geocell, and stiffness of the geocell. The aggregates layers used in this study were compacted at two different relative densities 50 and 70%. The results obtained from the numerical analysis indicate that the provision of geocell reinforcement enhancing the bearing capacity and reduces the footing settlement by spreading the applied load in the lateral direction resulting in very limited stress being transferred to the weak subgrade.