Mary Francis Hill Coley (August 15, 1900 – March 1966) was an American lay midwife who ran a successful business providing a range of birth services and who starred in a critically acclaimed documentary film used to train midwives and doctors. Her competence projected an image of black midwives as the face of an internationally esteemed medical profession, while working within the context of deep social and economic inequality in health care provided to African Americans. Her life story and work exist in the context of Southern granny midwives who served birthing women outside of hospitals.