DCAI 2026 serves as a forum to present applications of innovative techniques for studying and solving complex problems in artificial intelligence and computing. This 23rd edition brings together experience, current work, and promising future trends related to distributed computing, artificial intelligence, and their applications to provide efficient solutions to real-world problems. The technical program this year is both high in quality and diverse, featuring contributions from well-established and emerging research areas. Specifically, 91 papers were submitted by authors from 25 different countries, representing a truly "wide area network" of research activity. The DCAI'26 technical program has selected 23 full papers for the main track, and as in previous editions, there will be special issues in ranked journals. This edition of the conference is organized by the University of Naples Federico II (Italy), with the endorsement of the Department of Political Sciences, the Department of Social Sciences, the Department of Electrical Engineering and Information Technology, the Department of Economics and Statistics, and the Department of Law, alongside the School of Human and Social Sciences. We would like to thank all the contributing authors and the members of the Program Committee for their hard and highly valuable work.