Burnishing, a plastic deformation process, can be used to finish surfaces by plastic deformation of surface irregularities. A simple inexpensive and newly designed balburnishing tool, with interchangeable adapter for using different ball diameters, was used throughout the experimental work. In present paper reports on the optimization of the surface finish produced by ball burnishing process, using the surface response (RMS) methodology. A second order mathematical model correlating four predominant process parameters, viz, burnishing force, speed, ball diameter and number of tool pass, with the surface roughness parameter has been obtained. The model can be used in selecting the optimum process parameters for obtaining a desired control surface finish.