Investigating the effects of lateral loads in design of foundation is important as comparedrnto axial loads, although it gets normally less consideration in the usual practice. Thisrnstudy investigates the behavior of group piles in terms of load - displacement curves forrntrailing, intermediate and leading rows when it is laterally loaded by using FEM analysisrnemploying Plaxis 3-D FOUNDATION. Mohr-Coulomb model has been used to modelrnthe soil material. A 15-noded triangular element is executed while 3-D meshing for soilrnmaterial. The soil parameters were taken from previously done thesis, which has beenrncalibrated from local soil property. Structural materials were modeled by using linearelasticrnrnmodel, since steel and concrete behaves elastically under loading. Parametersrnwhich has been considered were pile geometry such as pile length/depth, spacing andrnpile number (number of rows) with different loading step. In addition, the pile is fixedrnhead system, but the effects of pile cap have not been considered, only used forrndistributing lateral loads equally. It has been found out that pile group lateralrndeformations are small when the pile spacing is large enough, while the number of pilesrnin the group increases, lateral movement of leading rows are decreasing. This is due tornthe overlapping shearing zones of the intermediate rows. When depth of piles increasesrnthere is increment of lateral confinement because of the increment of over burdenrnpressures. It is concluded for the laterally loaded group of piles; the leading rows canrnresist more reaction loads from the soil than the trail rows and deformed less than therntrail and intermediate rows. Finally based on the parameter analysis the difference of rowrndisplacement of leading, intermediate and trailing row were from 4% up to 8%, 9% up torn14%, 15 up to 20% respectively of total pile movements.