Chen ( ) is a common Chinese-language surname and one of the most common surnames in Asia. It is the most common surname in Taiwan (2010) and Singapore (2000). Chen is also the most common family name in Guangdong, Zhejiang, Fujian, Macau, and Hong Kong. It is the most common surname in Xiamen, the ancestral hometown of many overseas Hoklo.

The Hundred Family Surnames, commonly known as Bai Jia Xing, also translated as Hundreds of Chinese Surnames, is a classic Chinese text composed of common Chinese surnames. An unknown author compiled the book during the Song dynasty (960–1279). The book lists 507 surnames. Of these, 441 are single-character surnames and 66 are double-character surnames. About 800 names have been derived from the original ones.