A semiconductor package includes a first semiconductor chip having a first face and a second face opposite thereto. The first semiconductor chip includes a first wiring layer having a surface that forms the first face. A second semiconductor chip disposed on the first face of the first semiconductor chip includes a second wiring layer directly contacting the first wiring layer. A first mold layer is disposed on one lateral side of the first semiconductor chip and directly contacts the second wiring layer. A first via penetrates the first mold layer. A width of the first wiring layer and the first semiconductor chip in a horizontal direction are substantially the same. A width of the second wiring layer and the second semiconductor chip in the horizontal direction are substantially the same. A height of the first via and the first semiconductor chip in the vertical direction are substantially the same.