Thai

Thai or THAI may refer to:
 * Of or from Thailand, a country in Southeast Asia.
 * Thai people, Siamese people, Central/Southern Thai people or Thai noi people, an ethnic group from Central and Southern Thailand.
 * Sukhothai language, a kind of Thai topolect, by the end of the 18th century, they gradually diverged into regional variants, which subsequently developed into the modern Central Thai and Southern Thai.
 * Central Thai language or Siamese language, the sole official language in Thailand and first language of most people in Central Thailand, including Thai Chinese in Southern Thailand.
 * Southern Thai language, or Southern Siamese language, or Tambralinga language, language of Southern Thailand first language of most people in Southern Thailand
 * Thai script
 * Thai (Unicode block)

People with the name

 * Thai (surname), a Vietnamese version of Cai, including a list of people with the name
 * Thai Lee (born 1958), an American businesswoman
 * Thai Nguyen, US-based Vietnamese fashion designer and television personality

Other uses

 * Thai (cannabis), a name for the drug
 * Thai Airways International, the national airline of Thailand
 * Thai cat, a breed of cat in Thailand
 * Thai, a month in the Tamil calendar
 * Thai Pongal or simply Pongal, an agricultural fesitval in Tamil Nadu, India celebrated during the month
 * Toe to Heel Air Injection (THAI), a method of extracting oil from oil sands
 * Thái people (Vietnam), an ethnic group in Vietnam