The IEEE International Symposium on Circuits and Systems (ISCAS) is the flagship conference of the IEEE Circuits and Systems Society and the world’s premier forum for researchers in the active fields of theory, design and implementation of circuits and systems. ISCAS 2026 is driven by the theme “Circuits and Systems for Intelligent Society”, catalyzing transformative innovation at the intersection of circuits, systems, and Artificial Intelligence to faster the development of a smart and sustainable society. Technical lecture and poster sessions. Special sessions. Tutorials and workshops. Publication of conference proceedings and journal special issues. The symposium highlights a wide range of innovatition themes including: Artificial Intelligence and Deep Learning, Smart Systems for Automotive, Brain: Innovation Neurotechnologies, Intelligent Cyber Security Systems, Food Security and Climate Change, Ultra Low Power Circuits and Systems. ISCAS 2026's special initiatives include: Emerging Technologies Workshops on Information Security, Climate Change, and GeronCAS; Cross-Society Special Sessions which is co-organized by CASS and other IEEE societies/councils, on recent attractive themes for cross-disciplinary collaboration; and Special Sections in IEEE Transactions (invited publication in TCAS-I, TCAS-II, TBioCAS, TVLSI).