Sherry Tsai (Chinese: 蔡曉慧; Jyutping: coi3 hiu2 wai6; born 4 September 1983) is a retired swimmer from Hong Kong.

She competed at the 2000, 2004 and 2008 Olympics in the 50 m freestyle, 100 m and 200 m backstroke, and 200 m individual medley (six events in total), with the best achievement of 28th place.

[1] She attended and swam for the University of California, Berkeley in the USA.

[2] She won Hong Kong's Best Swimmer Award 4 years-in-a-row (1998–2001), and at one time held 14 Hong Kong Records.

[3] At the 2004 Olympics, she was Hong Kong's flagbearer for the Opening Ceremony.