Professor Hemantha Senanayake (MS, FRCS Ed FRCOG) is the Chair Professor in Obstetrics & Gynecology at the University of Colombo, Sri Lanka, where he also Chairs the Postgraduate Board of Study in Obstetrics & Gynecology. He is the President of the Endometriosis Society of Sri Lanka.

Professor Senanayake has extensive experience in administration and in obstetrics & gynaecology at hospitals with different levels of resources. Six years of his career were spent in the United Kingdom, first as a trainee and later as a Consultant.

He has delivered invited lectures in the United States of America, United Kingdom, Italy, Singapore and India, including a Plenary Lecture at the 2000 FIGO (International Federation of Obstetrics & Gynecology) World Congress of Obstetrics and Gynaecology in Washington DC.