A wiring board includes: a substrate having transparency; a mesh wiring portion arranged on the substrate and including a plurality of wiring lines; and a dummy wiring portion arranged around the mesh wiring portion and including a plurality of dummy wiring lines electrically independent of the wiring lines. The mesh wiring portion is comprised of an iterative array of a predetermined unit pattern in a first direction. In the first direction, a gap between the mesh wiring portion and the dummy wiring portion is 0.01 times or more and 0.2 times or less a pitch of the unit pattern in the first direction.