The special issue on "Sensors and Circuits for AI in Health" explores the transformative role of advanced sensor technologies and integrated circuits in healthcare. This issue delves into innovative sensor designs, cutting-edge circuit implementations, and their applications in AI-driven health diagnostics, monitoring, and treatment. Topics include wearable sensors, implantable devices, smart circuits for data processing, and AI algorithms optimizing sensor outputs. Emphasizing interdisciplinary research, it highlights breakthroughs enhancing precision, efficiency, and accessibility in healthcare. By showcasing state-of-the-art advancements, this issue aims to foster collaboration and inspire further innovation at the intersection of sensors, circuits, and AI in health.