The Lambs, Inc. (also known as The Lambs Club) is a social club in New York City for actors, songwriters, and others involved in the theatre. It is America's oldest theatrical organization. "The Lambs" is a registered trademark of The Lambs, Inc.; and the club has been commonly referred to as The Lambs Club and The Lambs Theater since 1874. The club's name honors the essayist Charles Lamb and his sister Mary, who during the early 19th century played host to actors and literati at their famed salon in London.