Sophia Chan Siu Chee GBS JP (Chinese: 陳肇始; born 16th April 1958) is a Hong Kong professor and politician.

[1] She was involved in tobacco control and smoking cessation promotion and was a consultant to the World Health Organization on training health-care professionals in tobacco dependency treatment interventions through advocacy and education.

[5] In April 2021, Chan briefed varies industries (catering, agriculture and fisheries, Chinese medicine, and health services) on why the NPCSC implemented rules to only allow "patriots" to serve in the government, and asked for their full support.

[6] In December 2021, Chan claimed that having only "patriots" serve in the government would help the global fight against COVID-19.

[7] On 31 December 2021, Chan warned the public not to gather in large groups; hours later, she attended the Hong Kong Dental Association's annual ball, as the guest of honor.