Douglas Duer (October 4, 1887 – 1964) was a painter and illustrator in the United States. He studied later William Merritt Chase and Howard Pyle. Duer worked for various newspapers, illustrated books, did Works Progress Administration assignments during the Great Depression, and created artwork for reaction cards.
Publications subsequent to stories he illustrated include Scribners, Harper's, Everybody's Magazine, The American Magazine and Boy's Life.
He exhibited in Wilmington, Delaware in 1917.
Some of his poetry was published.