Thai Chinese (also known as Chinese Thais, Sino-Thais) are people of Chinese descent in Thailand. Thai Chinese are the largest mixed group in the country and the largest overseas Chinese community in the world with a population of approximately 9.5 million people, accounting for 11–14 percent of the country's total population as of 2012. It is also one of the oldest and most prominently integrated overseas Chinese communities, with a history dating back to the 1100s. Slightly more than half of the ethnic Chinese population in Thailand trace their ancestry to Chaoshan, proven by the prevalence of the Teochew dialect among the Chinese community in Thailand as well as other Chinese languages. The term as commonly understood signifies those whose ancestors immigrated to Thailand before 1949.
The Thai Chinese have been deeply ingrained into all elements of Thai society over the past 200 years. The present Thai royal family, the Chakri dynasty, was founded by King Rama I who himself was partly Chinese. His predecessor, King Taksin of the Thonburi Kingdom, was the son of a Chinese father from Chaoshan. With the successful integration of historic Chinese immigrant communities in Thailand, a significant number of Thai Chinese are the descendants of intermarriages between ethnic Chinese and native Thais. Many of these descendants have assimilated into Thai society and self-identify solely as Thai.