Four Encounters is an unfinished work by the writer and philosopher Olaf Stapledon, written in the late 1940s but only published 26 years after the author's death. It takes place in contemporary (post World War II) Britain, and describes four meetings with various characters who are named for the spiritual quality that best defines them: a Christian, a scientist, a mystic and a revolutionary. There were originally to have been ten encounters, but Stapledon died before the project was completed.