Provided are a semiconductor package and a method for fabricating the same. The semiconductor package includes a lower package comprising a lower substrate, a lower semiconductor chip mounted on the lower substrate and comprising a redistribution, and a molding layer molding the lower semiconductor chip, an upper package comprising an upper substrate and an upper semiconductor chip mounted on the upper substrate, with the upper package being stacked on the lower package. The semiconductor package further includes an electrical interconnector extending from the upper substrate into the molding layer and connected to the redistribution to electrically connect the upper and lower packages to each other, and a dummy interconnector extending from the upper substrate into the molding layer to physically couple the upper and lower packages to each other.