Cantopop is a genre of pop music sung in Cantonese. Cantopop is also used to refer to the cultural context of its production and consumption. The genre began in the 1970s and became associated with Hong Kong popular music from the middle of the decade. Cantopop then reached its height of popularity in the 1980s and 1990s before slowly declining in the 2000s and shrinking in the 2010s. The term "Cantopop" itself was coined in 1978 after "Cantorock", a term first used in 1974. In the 1980s, Cantopop reached its highest glory with fanbase and concerts all over the world, especially in Macau, Mainland China, Taiwan, Singapore, Malaysia, South Korea, and Japan. This was even more obvious with the influx of songs from Hong Kong movies during the time.

Cantonese is a language within the Chinese (Sinitic) branch of the Sino-Tibetan languages originating from the city of Guangzhou and its surrounding Pearl River Delta. It is the traditional prestige variety of the Yue Chinese group, which has over 82.4 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 partially mutually intelligible varieties like Taishanese.