Cui (surname)

崔
Romanization	Mandarin: Cui (Pinyin) Ts'ui (Wade-Giles), Tsui (Wade-Giles) Korean: Choi Cyrillic: Tsoi Cantonese: Chui (Hong Kong), Choi (Macao, Malaysia) Vietnamese: Thoi

Cui (Chinese: 崔; pinyin: Cuī; Wade–Giles: Ts'ui, /ˈtsweɪ/) is one of the 100 most common surnames in China, with around 0.28% of the Chinese population having the surname (around 3.4 million in 2002). It is also one of the most common surnames in Korea, with around 4.7% of the population having the surname in South Korea (2.4 million in 2013).

In China, Cui is commonly found in Shandong and Henan, as well as provinces in the north-east and other areas of China, such as Heilongjiang, Liaoning, Hebei, Jiangsu, Shanxi, and Jilin. It is romanized as Chui in Hong Kong (Cantonese), Choi in Macao (Cantonese) and Malaysia, Choi in Korean, Thoi in Vietnamese and Tsoi in Cyrillic.

One origin of the surname came from descendants of someone who originally held the Jiang (姜) surname in the state of Qi, founded by Jiang Ziya (姜子牙). A grandson of Jiang Ziya named Jizi (季子), an heir apparent, chose to relinquish his claim to the throne in favour of his brother Shuyi (叔乙), and went to live in the Cui estate (崔邑, in present-day Shandong). His descendants later adopted Cui as their surname.

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