The book "Carbon Fibre from Lignin" provides comprehensive information on the production and properties of carbon fibers derived from lignin precursors. It highlights pioneering developments in the carbon fiber industry and presents a novel process for obtaining high-purity lignin, which is crucial for the production of high-quality carbon fibers. Carbon fiber is currently the preferred lightweight manufacturing material and is gaining importance worldwide. While over 80% of commercial carbon fibers are based on PAN (polyacrylonitrile), the production of carbon fibers from PAN is expensive, limiting their application to high-performance structural materials. Lignin, the second most abundant biopolymer in nature after cellulose, offers a carbon-rich, renewable resource and is readily available as a byproduct of the pulp and paper industry as well as the production of cellulosic ethanol. This book is aimed at anyone involved in the study of carbon fiber materials, their production, and the utilization of carbon fibers.