This book gathers selected high-quality research papers presented at the Third International Conference on Intelligent System (ICIS 2024), organized by University of Transport Technology, Hanoi, Vietnam, during 24-25 October 2024. It discusses high-quality and cutting-edge research in the areas of informatics, intelligent systems, and smart technologies and applications. The book is a collection of the latest research articles in intelligent control, artificial intelligence, neural networks, knowledge discovery, decision support systems, soft computing, data mining, and ontologies, machine learning, intelligent measurement, and other related fields.