Abstract: A wiring structure includes: positive signal wires configured to transmit a positive signal of differential signals; and negative signal wires configured to transmit a negative signal of the differential signals. The positive signal wires and the negative signal wires are interleaved. A first gap length and a second gap length are different from each other where the first gap length is a gap length between a first wire being an outermost wire among the positive signal wires and the negative signal wires and a first adjacent wire that is adjacent to the first wire, where the second gap length is a gap length between a second wire that is located inside among the positive signal wires and the negative signal wires and a second adjacent wire that is adjacent to the second wire. The second wire and the second adjacent wire are different from the first wire.