Quantum Physics and Emerging Technologies is a comprehensive textbook that introduces the fundamental principles of quantum physics and explores their applications in modern science and technology. The book covers key concepts such as quantum mechanics, wave-particle duality, quantum states, atomic and molecular physics, and quantum interactions, before examining emerging fields including quantum computing, quantum communication, quantum cryptography, quantum sensing, nanotechnology, photonics, and quantum materials. Designed for undergraduate and postgraduate students, researchers, and educators, the book combines theoretical foundations with practical applications, providing a clear understanding of how quantum physics is driving the next generation of scientific and technological innovations.