This book constitutes the refereed proceedings of the 8th IFIP WG 5.5 International Conference on Internet of Things, IFIPIoT 2025, held in Hyderabad, India, during November 6–8, 2025.The 25 full papers and 12 short papers presented were carefully reviewed and selected from a total of 85 submissions to the main conference. They were organized in topical sections as follows: Artificial Intelligence and Machine Learning Technologies for IoT; Cyber Security/ Privacy/ Trust for IoT and CPS; Electronics and Signal Processing for IoT; Hardware/ Software Solutions for IoT and CPS; and IoT or CPS Applications and Use Cases.