A decorative board in the present disclosure includes a primer layer, a concealing layer, a colorant layer and a topcoat layer containing ultraviolet-curable resin on a base material in this order. A method for manufacturing the decorative board in the present disclosure includes a stretching process, an irradiation process, and a separation process. The stretching process includes forming the primer layer, the concealing layer, and the colorant layer on the base material in this order; applying a ultraviolet-curable coating material containing ultraviolet-curable resin; placing a plastic film on the applied ultraviolet-curable coating material, placing a roller on the plastic film, and stretching the ultraviolet-curable coating material by rolling the roller. The irradiation process includes forming the topcoat layer by hardening the ultraviolet-curable coating material by ultraviolet ray irradiation. The separation process includes separating the plastic film after the irradiation.