This book presents peer reviewed articles from the 6th International Conference on Intelligent Systems and Networks (ICISN 2026), held at Hanoi in Vietnam. It covers peer reviewed high quality research manuscript, highlighting the work based on Intelligent Systems and Networks. This book shares ongoing outcomes, results and cutting edge works. Topics include Foundations of Computer Science; Computational Intelligence Language and speech processing; Software Engineering Software development methods; Wireless Communications Signal Processing for Communications; Electronics track IoT and Sensor Systems Embedded Systems; etc. It brings together professionals and researchers in the area and presents a platform for exchange of ideas and to foster future collaboration.