Cantonese (Simplified Chinese: 广东话; Traditional Chinese: 廣東話; Jyutping: gwong2 dung1 waa2) is a Chinese variety spoken in Singapore. Cantonese originates from the city of Guangzhou (also known as Canton) and its surrounding area in Southeastern China. It is the traditional prestige variety of the Yue Chinese dialect group, which has about 68 million native speakers. While the term Cantonese specifically refers to the prestige variety, it is often used to refer to the entire Yue subgroup of Chinese, including related but largely mutually unintelligible languages and dialects such as Toishanese.

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 the dominant and official language of Hong Kong and Macau. Cantonese is also widely spoken amongst Overseas Chinese in Southeast Asia (most notably in Vietnam and Malaysia, Cambodia and Singapore) and throughout the Western world.