【How-to】Where is mandarin spoken - Howto.org

The principal language of Hong Kong is standard Cantonese (粵語, 廣州話, 廣東話, 廣府話, 白話, 本地話), spoken by 88.9% of the population at home daily. As an official language, it is used in education, broadcasting, government administration, legislation and judiciary, as well as for daily communication.