(Black Tai; Vietnam, Thailand, Laos) Northern Thai (Lanna, Tai Yuan; Thailand, Laos, Burma) Lue (Lue, Tai Lue; China, Vietnam, Thailand, Laos, Burma) Phuan (Thailand) Thai Song (Thailand) Thai (Central/Standard Thai, Siamese; Thailand) Tai Dón (White Tai, Tai Kao; Vietnam, China) Tai Daeng (Vietnam) Tai Meuay (Laos) Tay Tac (Vietnam) Thu Lao (Vietnam) Lao–Phutai dialects (4) Lao (Laos; except Luang Prabang dialect is classified as Chiang Saen languages.) Lao Nyo (Cambodia, Thailand) Phu Thai (Thailand) Isan (Northeastern Thai; Thailand, Laos) Kaloeng (Thailand, Laos) Northwestern Tai dialects (Shanic family) (9) Ahom (Assam – extinct. Modern Assamese is Indo-European.) Khamti (Assam, Burma) Tai Laing (Tai Lai; Burma) Khün (Kuen; Burma) Khamyang (Assam) Shan (Tai Shan, Dehong; Burma) Tai Aiton (Assam) Tai Nuea (China, Vietnam, Thailand, Laos) Tai Phake (Assam) Turung (Assam) According to Ethnologue, other Southwestern dialects are Tai Ya (China), Pu Ko (Laos), Pa Di (China), Tai Thanh (Vietnam), Tai Long (Laos), Tai Hongjin (China), Yong (Thailand). It is not clear where they belong in the classification above. Ethnologue also lists under Tai, without further classification, Kuan (Laos), Tai Do (Viet Nam), Tai Pao (Laos), and Tay Khang (Laos). Geographically these would all appear to be Southwestern. Ethnologue also includes Tày Sa Pa (Sapa) of Vietnam, which Pittayaporn excludes from Southwestern Tai but classifies as the most closely related language outside of that group. Pittayaporn also includes Yoy, which Ethnologue classifies as a Northern Tai language. Further reading Miyake, Marc. 2014. Is Thai yuan 'Vietnamese' a loanword from Lao? Miyake, Marc. 2014. Black and white evidence for Vietnamese phonological history. Miyake, Marc. 2014. D-ou-b-led letters in Tai Viet. Miyake, Marc. 2014. *(C).r-usters in Black Tai and Bao Yen. Miyake, Marc. 2014. S-implificaition in Black Tai and Bao Yen. Miyake, Marc. 2010. Brown's (1979) "Vowel length in Thai". Miyake, Marc. 2010. Lao x ex ... ? References External links http://sealang.net/sala/archives/pdf8/wanna1992classification.pdf http://sealang.net/sala/archives/pdf8/chamberlain1975new.pdf http://sealang.net/sala/archives/pdf8/pranee1998linguistic.pdf http://sealang.net/sala/archives/pdf8/luo2001hypothesis.pdf Languages of Southeast Asia Tai languages