A connecting apparatus, which can be used in combination with a plurality of IC, cards. The connecting apparatus holds an inserted smart card (first IC card) having a first flat type connecting terminal on a first face thereof and holds a memory card (second IC card) having a second flat type connecting terminal on a first face thereof and smaller than the first IC card. The connecting apparatus comprises a first connecting device having a slot into which the smart card is inserted and a connecting electrode which is so formed as to contact the flat type connecting terminal when the smart card is inserted into the slot; a second connecting device having a slot into which the memory card is inserted and a connecting electrode which is so formed as to contact the flat type connecting terminal when the memory card is inserted into the slot. The second connecting device is formed at a side, of the first connecting device, in which the connecting electrode of the first connecting device is formed, such that a region in which the connecting electrode is formed is exposed.