Chrissie Chau Sau-Na is a Chinese actress and celebrity model from Hong Kong. Chau gained widespread fame after the release of her portrait albums in 2009 and 2010. Her film career began after appearing in the horror film "Womb Ghosts" (2009); Chau has appeared in 20 productions in Hong Kong, China, Taiwan and Malaysia.

Chau received four "Most Popular Search Photo" awards from Yahoo! in 2009–2012, "Yahoo! Entertainment Spotlight Person" in 2009 and the "Most Popular Actress Award" at the Yahoo Asia Buzz Awards. She received the "Award of Merit: Leading Actress" from The Accolade Competition in 2011 for her role in the film "Beach Spike".

Chau first attracted attention after "Post-90s Girls" in Hong Kong in a survey conducted by the YMCA in 2010. The report showed that the girls surveyed considered Chau to have a high IQ, to be optimistic and bold, and Chau ranked 16th in 2010 in the LIVAC Celebrity Roasters of Cross-Straits Media list announced by HKIEd, a title that brought her considerable media attention.