Cindy Au Sin Yee (歐倩怡, Pinyin: Ou Qianyi), born in 1979 in Hong Kong with family roots in Shunde, Guangdong, China, is an actress for TVB. She plays major supporting roles in drama serials.

She began her entertainment career as a singer, and was famous for the theme song to the Cantonese version of the cartoon Chibi Maruko-chan.

On July 22, 2006, Cindy Au married her boyfriend Roger Kwok at Disneyland, Hong Kong.

Filmography
Face to Face (1998)
Aiming High (1998)
Journey to the West II (1998)
The Vigilante in the Mask (2003)
Back to Square One (2003)
Lady Fan (2004)
Misleading Track (2005)
The Gentle Crackdown (2005)
La Femme Desperado (2006)

Album
Get It Right (2001)