This article explores improv theater concepts and techniques that are relevant to LIS and can be integrated into student training and librarian workshops. Some LIS literature applies these practices directly to library contexts. Substantial research exists in applying improvisation to three general areas: 1) collaboration and teamwork, 2) interacting with patrons and customers, and 3) teaching and instruction. Further research is needed in applying improvisational concepts to two LIS-specific areas: reference and information literacy.Ye