Venčeslav Poniž (Polish: Wenczesław Poniż; 25 September 1900 – 20 November 1967) was a Polish engineer. He is best known as the author of welded steel and reinforced concrete projects of inter-war and post-war Poland. Among the best-known of his designs are such landmarks as the Maurzyce Bridge, the Prudential Tower and the Fabryka Samochodów Osobowych car factory.