Cantonese is the traditional prestige variety of Yue Chinese, a Sinitic language belonging to the Sino-Tibetan language family. It originated in the city of Guangzhou (formerly romanized as Canton) and its surrounding Pearl River Delta. Although Cantonese specifically refers to the prestige variety in linguistics, the term is often used more broadly to describe the entire Yue subgroup of Chinese, including varieties such as Taishanese, which have limited mutual intelligibility with Cantonese.
Cantonese is viewed as a vital and inseparable part of the cultural identity for its native speakers across large swaths of southeastern China, Hong Kong, and Macau, as well as in overseas communities. In mainland China, it is the lingua franca of the province of Guangdong (being the majority language of the Pearl River Delta) and neighbouring areas such as Guangxi. It is also the dominant and co-official language of Hong Kong and Macau. Further, Cantonese is widely spoken among overseas Chinese in Southeast Asia (most notably in Vietnam and Malaysia, as well as in Singapore and Cambodia to a lesser extent) and the Western world. With about 80 million total speakers as of 2023, standard Cantonese is by far the most spoken variant of Yue Chinese and non-Mandarin Chinese language.