James Duard Marshall (September 29, 1914 – January 26, 2010) was a painter, lithographer, museum director, and art conservator who lived most of his life in Kansas City. Duard [pronounced "doo-erd"] was a student of Thomas Hart Benton and is best known for his 30-foot mural created for the centennial of Neosho, Missouri in 1939. The civic leaders of Neosho had approached Benton to produce the mural, as Benton had been born in Neosho, but he suggested that his student Marshall do the job. That mural hangs in the Neosho Newton County Library.