Matthaios Santamouris is a Professor of High Performance Architecture at UNSW Sydney and a former Professor in the University of Athens, Greece. He is a globally recognised expert in urban climate, building energy efficiency, and overheating mitigation. His research advances sustainable and resilient built environments through innovation in cool materials, passive design strategies, and urban heat adaptation. He has led major international collaborations addressing the impacts of climate change on cities and buildings. His work has significantly influenced global approaches to reducing urban heat and improving energy performance, earning him numerous international awards for his contributions to environmental sustainability and the design of climate-responsive architecture.