Protection of the varieties of Chinese refers to efforts to protect the continued existence of the varieties of Chinese in mainland China and other Sinophone regions, amid pressure to abandon their use, usually in favor of Standard Chinese. The Ministry of Education of the People's Republic of China has proclaimed to be taking active measures to protect ten varieties of Chinese. However, a large majority of the citizens of China speak a dialect of Mandarin Chinese, a standardized form of which has been enforced and promoted by the government of China for the last sixty years. The Constitution of the People's Republic of China calls on the government to promote Standard Chinese as the common tongue of the nation, but this policy has caused conflict to a certain extent with plans to preserve local varieties of Chinese. Education and media programming in varieties of Chinese other than Mandarin have been discouraged by the governments of the People's Republic of China, Singapore, and Taiwan. Teaching the varieties of Chinese to non-native speakers is discouraged by the laws of the People's Republic of China in favor of Putonghua. The Guangdong National Language Regulations were passed by the Guangdong provincial government in 2012 to promote the use of Standard Chinese in broadcast and print media at the expense of the local standard Cantonese and other related dialects. It has been labelled "pro-Mandarin, anti-Yue" legislation.

There are hundreds of local Chinese language varieties forming a branch of the Sino-Tibetan language family, many of which are not mutually intelligible. Variation is particularly strong in the more mountainous southeast part of mainland China. The varieties are typically classified into several groups: Mandarin, Wu, Min, Xiang, Gan, Jin, Hakka and Yue, though some varieties remain unclassified. These groups are neither clades nor individual languages defined by mutual intelligibility, but reflect common phonological developments from Middle Chinese.