This book 'Communicative Language Teaching: Origins, Fundamentals, Applications' is a comprehensive manual that navigates the intricate landscape of Communicative Language Teaching (CLT). Rooted in theoretical foundations, this manual aims to unravel the historical origins, delve into the fundamental principles, and explore the current trends that shape this transformative approach to language education. In this book, the author has examine the methodology known as communicative language teaching, or CLT, and explore the assumptions it is based on, its origins and evolution since it was first proposed in the 1970s, and how it has influenced approaches to language teaching today.