Robert Emmet Sherwood was an American playwright and screenwriter.

Abe Lincoln in Illinois is a play written by the American playwright Robert E. Sherwood in 1938, based principally on the 1926 biography Abraham Lincoln: The Prairie Years by Carl Sandburg. The play, in three acts, covers the life of President Abraham Lincoln from his childhood through his final speech in Illinois before he left for Washington. The play also covers his romance with Mary Todd and his debates with Stephen A. Douglas, and uses Lincoln's own words in some scenes. Sherwood received the Pulitzer Prize for Drama in 1939 for his work.