An emerging family of two-dimensional transition-metal carbides and nitrides, known as MXenes, has become a focal point of materials research because of their exceptional electrical conductivity, tunable surface chemistry, mechanical properties, and solution-processability. This book offers a concise yet comprehensive overview of recent advances in MXene-based materials, emphasizing their design strategies, structure-property relationships, and technological relevance. The book covers key topics including flexible and wearable electronics, fiber-reinforced nanocomposites, neuromorphic and memory devices, biomedical applications, thin-film conductivity, and energy-storage systems with intrinsic thermal management. It highlights how surface engineering and interfacial interactions enable precise control over multifunctional performance across diverse material systems. By integrating perspectives from materials science, nanotechnology, electronics, and energy research, this book underscores the advantages of MXenes as a versatile platform for next-generation devices, including high-performance sensors, biointegrated systems, energy-efficient computing components, and safe, fast-charging batteries. Written for researchers, graduate students, and professionals, the book provides valuable insights into current challenges and future opportunities, serving as a helpful reference for those seeking to understand and exploit MXenes and related two-dimensional materials in advanced functional applications.