The Third International Conference on Innovations in Computing Research (ICR'24), August 12-14, 2024, Athens, Greece, 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 six tracks to promote a birds-of-the-same-feather congregation and maximize participation. ICR'24 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, and Smart Cities and Smart Energy. It 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.