The Yi or Nuosu people are an ethnic group in southern China. Numbering nine million people, they are the seventh largest of the 55 ethnic minority groups recognized by the Chinese government. They live primarily in rural areas of Sichuan, Yunnan, Guizhou, and Guangxi, usually in mountainous regions. The Liangshan Yi Autonomous Prefecture is home to the largest population of Yi people within China, with two million Yi people in the region. In neighbouring Vietnam, as of 2019, there are 4,827 Lô Lô people living in the Hà Giang, Cao Bằng, and Lào Cai provinces, in the country's north.

Ethnic minorities in China are the non-Han population in the People's Republic of China (PRC).