Oral cancer is a global challenge with high burden on the society and family. Increasing incidence of oral cancer to be reduced by awareness to the general public. There is need for the health workers around the world also to be updated on recent advances in oral cancer. Keeping the above reasons in mind, the book comprising of various issues pertaining to oral cancer is written. When it comes to oral cancer management, two important issues have to be considered – diagnosis and management. Diagnosis of oral cancer has come a big way from basics to advanced non invasive and invasive methods. Early diagnosis of oral cancer plays a vital role in the management of oral cancer. It is the accurate or precise diagnosis which will help the clinician to make appropriate decisions on the management protocol. First four chapters helps the clinician to understand etiology or risk factors, various ways to classify oral cancer and its clinical presentation. Staging of oral cancer is a crucial step in diagnosis as it reports to the oncologist. On the basis of staging, surgeon will decide the treatment protocol. Decision is made on the customized treatment protocol for each of the patients. Final chapters comprise of numerous methods of diagnosis. It deals with several methods from basic to advance. It may be chosen based on the circumstances and availability of materials. Hence this book will be useful to clinicians and researchers in the field of Oral medicine. Undergraduates and postgraduate information and knowledge will be enhanced. We all look forward to future developments in diagnosis paradigms that will lead to even better outcomes for patients with oral cancers, and this textbook will serve as an important point of reference for these future advancements.