The Druid Circle is a 1947 play in three acts written by John Van Druten. It has a medium-sized cast, slow pacing, five scenes, and three settings. A history professor, frustrated to be working at a university near the border of England and Wales, discovers a love letter written by one of his students to a girl. After humiliating them both, the Professor realises too late the meanness of his actions when it rebounds on him. The play's title comes from "Druid", British academic slang denoting a erudite scholar who has lost his sense of humanity, with "Circle" indicating a group of the same.