This textbook introduces to the fundamentals and applications of insect biotechnology in a concise manner. Global economically important insects such as silkworm, lac or honey bee are in the focus of this text. The book attempts to address all of the latest developments in this growing field such as application of metagenomics and proteomics in mining for genes and enzymes that could be beneficial in diverse industrial and biomedical applications. Further, insects have been established as suitable tool for the production of transgenic products which is discussed in one dedicated chapter.