This book originated from my library dissertation on glycosylation in oral squamous cell carcinoma (OSCC). Glycosylation plays a crucial yet often overlooked role in cancer stemness, tumor progression, and metastasis. The topic fascinated me due to its molecular depth and clinical significance. I felt a strong need to compile current research into a comprehensive, student-friendly resource. Designed for postgraduate readers and early researchers, it bridges basic science with clinical relevance. The book reflects my passion for oral pathology and molecular oncology. It encourages deeper understanding and interdisciplinary thinking in cancer biology. I hope this work sparks curiosity and supports future exploration in the field.