The waterjet pressure on the Abrasive Water Jet cutting processes affects all the related to the phenomenon of the material. In this study, the effect of water pressure on the AWJ process on the surface quality and corrosion properties of 316L Stainless steel was investigated. The cutting process is carried out by varying the pressure on the nozzle and with the cutting angle being kept at an angle of 90º to the substrate surface. In this research, Garnet with 200 mesh is used as the abrasive material. The results of the AWJ will be tested for corrosion using the 3-cell electrode method and then the surface topography will be observed using SEM. The results obtained in this study are that the corrosion rate decreases with increasing pressure in the AWJ process, however there is an increase after passing the optimal point, namely at 3500 Psi pressure.