Dr. Mark Tyndall is a Canadian physician with specialty training in Internal Medicine, Infectious Diseases and Public Health. He was formerly the Executive Director of the BC Centre for Disease Control and Professor of Medicine at the University of British Columbia. He has over three decades of community-based clinical and research experience and is internationally recognized for his contributions to HIV prevention, harm reduction, human rights, and drug policy reform. He has authored over 300 peer reviewed publications and gave a 2017 TED talk on Harm Reduction. His current research and advocacy efforts are focused on accelerating the global transition away from combustible cigarettes to vaping and other safe(r) nicotine products. He is the author of the 2025 book, Vaping: Behind the Smoke and Fears.