A semiconductor package includes: a first redistribution wiring layer having first redistribution wirings; a second redistribution wiring layer arranged on the first redistribution wiring layer, and including a first region, a second region, and a second redistribution wirings; a first semiconductor chip arranged on the first region of the second redistribution wiring layer; a plurality of second semiconductor chips spaced apart from each other on the upper surface of the second region of the second redistribution wiring layer; a plurality of third semiconductor chips arranged in the second region of the second redistribution wiring layer and spaced apart from each other between the first and second redistribution wiring layers; and a heat transfer medium arranged on the first region of the second redistribution wiring layer and overlapping the first semiconductor chip with the second redistribution wiring layer interposed between the first semiconductor chip and the heat transfer medium.