Abstract: Provided is an antifouling acrylic board coated with a photocatalyst layer suitable for a surface of a base material made of an acrylic organic material. The antifouling acrylic board includes an acrylic base material, a silica layer constituted of silica as a main constituent and formed on a surface of the acrylic base material, and a photocatalyst layer including titanium oxide particles dispersed in a silica matrix and formed on the silica layer and further includes a binding layer constituted of a silane coupling agent and provided between the surface of the acrylic base material and the silica layer. The silane coupling agent is an epoxy silane coupling agent or a vinyl silane coupling agent.