Dr Lalana Devi Ranasinghe, MBBS, MD, MRCP, is a Consultant Endocrinologist attached to the Teaching Hospital, Ratnapura, Sri Lanka.

She received her MBBS from the Faculty of Medicine, University of Colombo. She obtained her MD in medicine from the University of Colombo. She completed her overseas training at Cambridge University Hospital, UK. 

Her research interests include neuroendocrine and diabetes.