A memory card provided with a communication function has a substrate having a first mounting surface and a second mounting surface on a side opposite to the first mounting surface, a memory chip mounted on the first mounting surface or the second mounting surface, a proximity wireless communication circuit on the first mounting surface or the second mounting surface, a circuit pattern which is disposed on at least one of a first area of the first mounting surface and a second area of the second mounting surface located opposite to the first area, the substrate being between the first area and the second area, and which is connected with the memory chip and the proximity wireless communication circuit, and a chip antenna mounted on a third area of the first mounting surface or a fourth area of the second mounting surface.