The Yi or Lolo people are an ethnic group in China, Vietnam, and Thailand. Numbering 8 million, they are the seventh largest of the 55 ethnic minority groups officially recognized by the People's Republic of China. They live primarily in rural areas of Sichuan, Yunnan, Guizhou, and Guangxi, usually in mountainous regions. As of 1999, there were 3,300 "Lô Lô" people living in Hà Giang, Cao Bằng, and Lào Cai provinces in northeastern Vietnam. Most Yi are farmers; herders of cattle, sheep and goats; and nomadic hunters.
The Yi speak various Loloish languages, Tibeto-Burman languages closely related to Burmese. The prestige variety is Nuosu, which is written in the Yi script.