Yik-Ying Teo is Dean of the Saw Swee Hock School of Public Health at the National University of Singapore (NUS). Prior to his Deanship, he was the Founding Director of NUS Centre for Health Services and Policy Research (CHSPR), and Director of its Centre for Infectious Disease Epidemiology and Research (CIDER).

A mathematician by training, Teo holds an MSc in Applied Statistics and a DPhil in Statistical Genetics from the University of Oxford, UK. He returned to Singapore from the UK in 2010 after working for four years concurrently as a lecturer at Oxford and a researcher at the Wellcome Trust Centre for Human Genetics. He is presently a member of the Council of Scientists for the International Human Frontier Science Program as well as a governing board member of the Regional Centre for Tropical Medicine and Public Health Network for Southeast Asia.