Jocalyn Clark, MSc PhD FRCPE FCAHS, is an award-winning public health scientist and Executive Editor at The Lancet in London, UK. Her editorial leadership has advanced the interests of gender equity, global health, and the Canadian health sciences within a global context. Over a 15-year career at The BMJ, PLOS, icddr,b in Bangladesh, and The Lancet, her work has generated critical debates in areas such as over-medicalization, women’s health, and social contexts of health. She is a scientific advisor to the INDEPTH Network, Global Health 50/50, and WomenLift Health, and a member of the CMAJ governance council. Since 2006 she has been adjunct professor of medicine at the University of Toronto. In 2014 she was named a top-100 woman leader in global health and in 2018 co-founded the first-ever Canadian Women in Global Health List. Jocalyn is an elected fellow of the Royal College of Physicians of Edinburgh and the Canadian Academy of Health Sciences.