Xu (胥, SHOO) is a Chinese surname.
It is romanized as Hsü in Wade–Giles and Seoi in Cantonese.
According to a 2013 study, it was the 267th most common name in China; it was shared by 285,000 people, or 0.021% of the population, being most popular in Sichuan.
[1] It is the 285th name in the Hundred Family Surnames poem.
[2] The character 胥 means "assist," "store" or "all;" it formerly referred to a kind of low-ranking official or assistant.