Mary Elizabeth Frances Henry (born 11 May 1940, in Blackrock, Cork) is a former Irish politician and medical doctor. She was an independent member of Seanad Éireann. She was elected Pro-Chancellor of the University of Dublin in 2012. By profession she is a University Professor and medical practitioner. In 1966 she married John McEntagart of Dublin, Merchant and they have three children. She is a member of the Church of Ireland.
She is a graduate of the University of Dublin (B.A. in English and History of Medicine 1963, M.B. (Honours) (1965), M.A. (1966) M.D. (1968)). As an undergraduate, among many other distinctions she won the Sir James Craig Memorial Prize in Medicine.