The Ontario Agency for Health Protection and Promotion (OAHPP) is an arm's-length government agency dedicated to protecting and promoting the health of all Ontarians and reducing inequities in health. As a hub organization, OAHPP links public health practitioners, front-line health workers and researchers to the best scientific intelligence and knowledge from around the world.

OAHPP provides expert scientific and technical support relating to infection prevention and control; surveillance and epidemiology; health promotion, chronic disease and injury prevention; environmental and occupational health; health emergency preparedness; and public health laboratory services to support health providers, the public health system and partner ministries in making informed decisions and taking informed action to improve the health and security of Ontarians.