This book concentrates on innovations in research in the areas of Data Science, Computer Science and Computer Engineering Education, Computer and Network Security, Health Informatics and Digital Imaging, Internet of Things, Smart Cities and Smart Energy, and Quantum Computing The Fourth International Conference on Innovations in Computing Research (ICR'25), August 25-27, 2025, London, UK, brings together a diverse group of researchers from all over the world with the intent of fostering collaboration and dissemination of the innovations in computing technologies. The conference is aptly segmented into seven tracks to promote a birds-of-the-same-feather congregation and maximize participation. This book introduces the concepts, techniques, methods, approaches, and trends needed by researchers, graduate students, specialists, and educators for keeping current and enhancing their research and knowledge in these areas.