Ollie Jay is Professor of Heat and Health and Director of the Heat and Health Research Centre and Thermal Ergonomics Laboratory in the Faculty of Medicine and Health at the University of Sydney, affiliated with the Sydney School of Health Sciences and Discipline of Exercise and Sport Science. He holds a BSc (Hons) and PhD from Loughborough University in the United Kingdom and is a Fellow of the American College of Sports Medicine (FACSM). An Australian-Welsh academic originally from the UK, Jay joined the University of Sydney in January 2014, having previously served as Associate Professor in the School of Human Kinetics at the University of Ottawa, Canada, from July 2008 to December 2013.

Jay's research interests encompass thermoregulation, heat and health, thermal physiology, exercise in hot conditions, and the health impacts of climate change. His scholarship is evidenced by over 19,000 citations on Google Scholar and more than 330 publications. Key works include "Hot weather and heat extremes: health risks" published in The Lancet (2021), contributions to the 2022 Lancet Countdown on Health and Climate Change report, "Exertional heat stroke in sport and the military: epidemiology and mitigation" in Experimental Physiology (2022), and the "IOC consensus statement on recommendations and regulations for sport events in the heat" in the British Journal of Sports Medicine (2023). He co-leads Working Group 1 of the Lancet Countdown on Health and Climate Change and a special Lancet series on extreme heat and health extremes, with annual updates alongside the Medical Journal of Australia. Jay's influence extends to developing heat stress metrics for the Australian Open, consulting for the Australian Olympic team at the 2024 Paris Olympics, Cricket Australia, the National Rugby League, and Google on extreme heat health tips. He serves on the Management Committee of the Global Heat Health Information Network, involving the World Health Organization and World Meteorological Organization. Awards include the University of Sydney Vice-Chancellor's Award for Excellence in Outstanding Research and Teaching (2017), SUPRA Research Supervisor of the Year (2018 and 2019), and the John C. Harsanyi Medal for Innovation.

Professional Email: ollie.jay@sydney.edu.au