Choy So-yuk, BBS, JP (Chinese: ???; pinyin: Cà i Sùyù, born 10 October 1950) is a Hong Kong politician.
She is an elected member of Eastern District Council and a Hong Kong Deputy of the National People’s Congress.
From 1997 to 2008 she was a member of the Legislative Council of Hong Kong and its forerunner.
Choy is a member of the Democratic Alliance for the Betterment and Progress of Hong Kong (DAB) and her main supporters are pro-Beijing politicians and organisations, especially the Fujianese in North Point on Hong Kong Island.