Low salinity enhanced oil recovery has been explored for both carbonate and sand stone reservoirs. But high salinity water enhanced oil recovery has only been studied for carbonate reservoirs. In this study, high salinity smart water enhanced oil recovery is investigated for sandstone reservoirs. Core flooding experiments with Green sandstone was conducted at 60 °C. Different compositions of Na and Mg salts were injected into the core plugs. The water flooding experiment showed that high salinity SmW-EOR can be successfully implemented for sandstone reservoirs as well. Beyond the initial oil recovery, variation in composition of injected Na salt brines at constant salinity showed an increment in oil production of 1.5% of OOIP. A similar variation for injected Mg salt brines showed an increase in oil production of 4.22% of OOIP. As suggested for chalks, these experiments show that injection of high concentration of Mg2+ and SO42- ions can enhance the oil production for sandstone reservoir core plugs as well. This increase in oil production is attributed to two major factors including: (1) Pause and resumption of brine injection; (2) variation in salt composition. Similar water floods with carbonate core plugs show significantly more increase in oil production (increments up to 10.2% of OOIP) following ion substitution on mineral surfaces. These results show that SmW-EOR is possible; and Mg2+ and SO42- can cause increase in oil production for low temperature sandstone reservoirs. This study suggests that high salinity SmW-EOR can be potentially considered in significantly more oil fields than any previous estimation have shown.