Dato' Kew Siang Tong, also rendered as Siang Tong Kew, is a Malaysian Chinese physician, academic administrator and health bureaucrat. She is currently Professor in Internal Medicine and Dean of the School of Medicine at the International Medical University in Kuala Lumpur. She has formerly been Head of Gastroenterology at Kuala Lumpur Hospital and worked in the Ministry of Health from 1999 to 2002. She has been Master of the Academy of Medicine of Malaysia, President of the College of Physicians and President of the Malaysian Society of Gastroenterology and Hepatology.