The Tai-Kadai language family is the most widely spoken in Thailand, with over 60 million speakers. The Tai languages, which include Thai, Lao, and Shan, are the largest branch of the Tai-Kadai family.

The Austroasiatic language family is the second most widely spoken in Thailand, with over 10 million speakers. The Mon-Khmer languages, which include Khmer, Mon, and Vietnamese, are the largest branch of the Austroasiatic family.

The Hmong-Mien language family is spoken by the Hmong people of Thailand, as well as by other ethnic groups in Southeast Asia. The Hmong-Mien languages are divided into two main branches: the Hmongic languages and the Mienic languages.

The Yao people of Thailand speak a language that belongs to the Hmong-Mien language family. The Yao language is closely related to the Hmong language, and the two languages are often considered to be dialects of a single language.

The Karen people of Thailand speak a language that belongs to the Sino-Tibetan language family. The Karen language is closely related to the Burmese language, and the two languages are often considered to be dialects of a single language.

The Akha people of Thailand speak a language that belongs to the Sino-Tibetan language family. The Akha language is closely related to the Hani language, and the two languages are often considered to be dialects of a single language.

The Lahu people of Thailand speak a language that belongs to the Sino-Tibetan language family. The Lahu language is closely related to the Lisu language, and the two languages are often considered to be dialects of a single language.

The Lisu people of Thailand speak a language that belongs to the Sino-Tibetan language family. The Lisu language is closely related to the Lahu language, and the two languages are often considered to be dialects of a single language.

The Wa people of Thailand speak a language that belongs to the Austroasiatic language family. The Wa language is closely related to the Palaung language, and the two languages are often considered to be dialects of a single language.

The Palaung people of Thailand speak a language that belongs to the Austroasiatic language family. The Palaung language is closely related to the Wa language, and the two languages are often considered to be dialects of a single language.

The Lawa people of Thailand speak a language that belongs to the Austroasiatic language family. The Lawa language is closely related to the Mon language, and the two languages are often considered to be dialects of a single language.

The Khmu people of Thailand speak a language that belongs to the Austroasiatic language family. The Khmu language is closely related to the Mon language, and the two languages are often considered to be dialects of a single language.

The Kui people of Thailand speak a language that belongs to the Austroasiatic language family. The Kui language is closely related to the Mon language, and the two languages are often considered to be dialects of a single language.

The So people of Thailand speak a language that belongs to the Austroasiatic language family. The So language is closely related to the Mon language, and the two languages are often considered to be dialects of a single language.

The Mal people of Thailand speak a language that belongs to the Austroasiatic language family. The Mal language is closely related to the Mon language, and the two languages are often considered to be dialects of a single language.