August Vandekerkhove (15 October 1838 Kanegem - 24 March 1923 Mâcon) was a Belgian writer, playwright, poet, painter and inventor. He wrote under the pseudonym S.U. Zanne. Vandekerkhove started a movement he called Cosmosofie (Cosmosophy). He said that Cosmosophy was the opposite of Theosophy. When he was young he wrote a novel and three plays. His literary work was inspired by ethics and psychology. Later he moved to Scotland, the USA and France.