Chathura Rathnayake received the M.B.B.S. (Bachelor of Medicine, Bachelor of Surgery) degree from the Faculty of Medicine, University of Colombo, Colombo, Sri Lanka, in 1996, and the M.S. degree in obstetrics and gynaecology from the Postgraduate Institute of Medicine, University of Colombo, in 2002. He was trained in the Overseas Doctors Fellowship in the U.K., in 2003–2005. He was a member of the Royal College of Obstetricians and Gynecologists, London, U.K., in 2005. He was board certified as a Specialist with the Department of Obstetrics and Gynaecology, University of Peradeniya, Peradeniya, Sri Lanka, in 2004. He has served with the Ministry of Health, as a Consultant Obstetrician, and then joined the Faculty of Medicine, University of Colombo, as a Senior Lecturer, in 2008. He is currently working as a Professor with the Department of Obstetrics and Gynaecology. His research interests are in high-risk pregnancy, subfertility and reproductive toxins, biomedical instrumentation in pregnancy, and using molecular techniques in diagnosis and treatment in obstetrics and gynecology. Dr. Rathnayake was a recipient of the National Science Foundation (NSF) and the National Research Council (NRC) grants for research in Sri Lanka. He received Presidential Research Award for Research Publication of NRC in 2017.