The textbook, intended for students of higher educational institutions of library and information profile, offers theoretical materials for mastering the course "Professional Ethics and Etiquette" . This work is an attempt at a systematic approach to professional ethics and etiquette in general, and professional ethics and etiquette in library and information activities. Proposed training manual , Accumulating an expanded series of scientific publications on the problem under consideration , will allow to study with sufficient completeness various aspects of professional ethics and etiquette and will provide real help in mastering theoretical knowledge and practical skills to a specialist of library and information profile .