A detection device is capable of detecting an external proximity object, and includes a substrate and a plurality of detection electrodes. The detection electrodes are each provided with a plurality of thin conductive wires having a plurality of first thin wire pieces and a plurality of second thin wire pieces which are electrically conducted with one another. Angles each of which is formed by an intersection between the first thin wire piece extending in a first direction and the second thin wire piece extending in a second direction different from the first direction included in the thin conductive wire, are constant, and a distance between the first thin wire pieces of different thin conductive wires is not constant.