Topology optimization is a numerical approach that optimizes material arrangement within a given design space, for a given set of loads and periphery conditions such that the resulting layout meets a approved set of concert targets. Using topology optimization, engineers can find the best perception design that meets the design necessities. Topology optimization has been developed through the use of finite element methods of the analysis, and optimization techniques based on the method of moving asymptotes, genetic algorithms, optimality criteria method, level sets, and derivatives. Topology optimization is used at the idea level of the design process to appear at an intangible design plan that is then fine-tuned for concert and manufacturability. This thesis work correlated to the lay out optimization of internal combustion engine piston. Piston is one of the significant apparatus of engine. The multiple type of piston using through the automobile sectors. The various different type of piston is i) Equivalents lands thickness piston ii) Without crown piston (flat piston), iii) Without undercut piston, iv) With skirt land piston v) Dissimilar land thickness the analyzed this research work the Computer Aided Designing model initially created by CATIA, then Finite Element Analysis done by ANSYS.