Yung Jing-Jing
- Born
- 22 May 1964 (62 years)
- Place of birth
- Vietnam
- Gender
- Female
Mary Jean Reimer (born 22 May 1964), also known as Yung Jing-Jing, is a Hong Kong solicitor and actress. She has American-Chinese-Vietnamese ancestry. Married to Lau Kar-Leung in 1984 until Lau's death in 2013. Graduated with a law degree from the University of Hong Kong.
