With the growing complexity of various polymer systems, NMR has become a unique and indispensable tool for precise characterization of microstructures and dynamics. This book specifically focuses on NMR investigation of complex polymers for the polymer community as well as NMR spectroscopists, and could push the development of both fields. It will cover the latest development and show how the novel NMR methods could be used to characterize various synthetic and natural polymers. It appeals to researchers of synthetic and natural polymers who require information on how to characterize polymer structures.