This book presents the latest advancements in various synthetic techniques, properties, characterization, and efficient applications of CNT-polymer nanocomposites. The preparation, properties, characterization, and applications of these technologically intriguing new materials are discussed in detail. The book covers a wide range of topics from the fundamentals of carbon nanotubes, their reinforced polymer nanocomposites and their applications in various fields including energy storage, 3D printing, electronics, aerospace and coatings, and environmental and bio-medical/bioengineering. It is a good resource for students, material scientists, and professionals interested in the synthesis, properties, characteristics, and cutting-edge applications of carbon nanotubes-polymer nanocomposites.