Vivian Wing-Wah Yam (b. 1963) is a Hong Kong chemist, and in 2001 became the youngest person to ever be elected as a member of the Chinese Academy of Sciences. She is also a Fullbright Scholar and a Fellow of the Academy of Sciences for the Developing World.
Her research mostly deals with light-emitting materials, and has enabled more efficient displays for devices such as laptops and mobile phones and therefore helping to reduce the planet’s power consumption. In 2011 she won the L’Oréal-UNESCO Award for Women in Science.