The primary goal of this book is to comprehensively explore the evolving applications and challenges of click chemistry. Unlike existing literature, this volume spans the entire spectrum of click chemistry—from foundational principles to cutting-edge applications across diverse fields. Each chapter, authored by leading professionals in the field, addresses emerging applications, challenges, and potential solutions in click chemistry. Designed as an essential textbook, it caters to students and researchers alike, offering fresh insights and opportunities in this rapidly advancing discipline.