The Marion County Public Health Department (MCPHD) is the Division of Public Health for the Health and Hospital Corporation of Marion County, serving the residents and visitors of Marion County, Indiana, for nearly 100 years.

The department is dedicated to promoting physical, mental, and environmental health, preventing disease, injury, and disability across the region, including Indianapolis, Speedway, and Southport. MCPHD operates through specialized bureaus—including Environmental Health, Population Health, and Public Health Administration—providing critical services like retail food inspections and emergency preparedness. Furthermore, the department engages in initiatives like the Community Compass to address community needs.