There is provided a method for fabricating a wiring board including: a mounting step of mounting a light transmitting member, the mounting step including: an arranging step of holding the light transmitting member by light transmitting holder to arrange the light transmitting member at a wiring board main body, and a step of curing a photo-curing resin material between the light transmitting member and the wiring board main body by light transmitted through the light transmitting member and the holder.