"An Introduction to Medical Physics" is a comprehensive textbook aimed at students of medical physics. It provides a systematic introduction to the fundamental concepts and definitions of the field and guides readers step by step through various areas of medical physics. Topics include, among others, radiation therapy, diagnostic radiology, dosimetry, radiation protection, and nuclear medicine. The book is designed to meet the needs of undergraduate students and covers both theoretical concepts and practical applications. Notably, it emphasizes numerical and mathematical problems that help learners develop a deeper understanding of the subject. This work is a valuable resource for anyone preparing for advanced studies in medical physics.