Ada Choi
Birthday: 9/17/1973
Gender: Female
Place Of Birth: Hong Kong, China

Ada Choi Siu-fan (Chinese: 蔡少芬; born 17 September 1973) is a Hong Kong actress best known for her work for TVB television, as an evil empress in the Chinese television series Empresses in the Palace (甄嬛傳), and to a lesser extent, for her film work.