This textbook introduces the use of lasers in manufacturing. Starting with the generation and the properties of laser beams, it covers the interaction mechanisms between laser radiation and workpieces, which are essential for a successful process design. Selected, industrially relevant manufacturing processes are used to illustrate the link between fundamental knowledge and technological implementation. The content has been developed for teaching purposes and reflects the latest scientific findings from current research. This textbook has been developed and recommended for university courses in Germany, Austria and Switzerland.