The Northern Thai people or Tai Yuan, self-designation khon mu(e)ang are a Tai ethnic group, native to nine provinces in Northern Thailand, principally in the area of the former kingdom of Lan Na. As a Tai group, they are closely related to Tai Lü and Tai Khün with regards to common culture, language and history as well as to Thailand's dominant Thai ethnic group. There are approximately 6 million Tai Yuan. Most of them live in Northern Thailand, with a small minority 29,442 living across the border in Bokeo Province of Laos. Their language is called Northern Thai, Lanna or Kham Mueang.