The Austroasiatic languages are a large language family spoken throughout Mainland Southeast Asia, South Asia and East Asia. These languages are natively spoken by the majority of the population in Vietnam and Cambodia, and by minority populations scattered throughout parts of Thailand, Laos, India, Myanmar, Malaysia, Bangladesh, Nepal, and southern China. Approximately 117 million people speak an Austroasiatic language, of which more than two-thirds are Vietnamese speakers. Of the Austroasiatic languages, only Vietnamese, Khmer, and Mon have lengthy, established presences in the historical record. Only two are presently considered to be the national languages of sovereign states: Vietnamese in Vietnam, and Khmer in Cambodia. The Mon language is a recognized indigenous language in Myanmar and Thailand, while the Wa language is a "recognized national language" in the de facto autonomous Wa State within Myanmar. Santali is one of the 22 scheduled languages of India. The remainder of the family's languages are spoken by minority groups and have no official status.
The Munda languages are a group of closely related languages spoken by about nine million people in India, Bangladesh and Nepal. Historically, they have been called the Kolarian languages. They constitute a branch of the Austroasiatic language family, which means they are more distantly related to languages such as the Mon and Khmer languages, to Vietnamese, as well as to minority languages in Thailand and Laos and the minority Mangic languages of South China. Bhumij, Ho, Mundari, and Santali are notable Munda languages.
The Austric languages are a proposed language family that includes the Austronesian languages spoken in Taiwan, Maritime Southeast Asia, the Pacific Islands, and Madagascar, as well as Kra–Dai and Austroasiatic languages spoken in Mainland Southeast Asia and South Asia. A genetic relationship between these language families is seen as plausible by some scholars, but remains unproven.
Kuy, also known as Kui, Suay or Kuay, is a Katuic language, part of the larger Austroasiatic family spoken by the Kuy people of Southeast Asia.
The Bahnaric languages are a group of about thirty Austroasiatic languages spoken by about 700,000 people in Vietnam, Cambodia, and Laos. Paul Sidwell notes that Austroasiatic/Mon–Khmer languages are lexically more similar to Bahnaric and Katuic languages the closer they are geographically, independently of which branch of the family they belong to, but that Bahnaric and Katuic do not have any shared innovations that would suggest that together they form a branch of the Austroasiatic family, rather forming separate branches.
The Monic languages are a branch of the Austroasiatic language family descended from the Old Monic language of the kingdom of Dvaravati in what is now central Thailand. The Nyahkur people continue directly from that kingdom, whereas the Mon are descendants of those who migrated to Pegu after the 11th century Khmer conquest of Dvaravati.
The Palaungic or Palaung–Wa languages are a group of nearly 30 Austroasiatic languages, with scholars disagreeing on exactly which languages to include in the classification. They are spoken in scattered pockets across an inland region of Southeast Asia, centered on the borders between Myanmar, Thailand, Laos, Vietnam, and China.
The Khmuic languages are a branch of the Austroasiatic languages spoken mostly in northern Laos, as well as in neighboring northern Vietnam and southern Yunnan, China. Khmu is the only widely spoken language in the group.
The Pakanic languages constitute a branch of two Austroasiatic languages, Bolyu and Bugan. They are spoken in Guangxi and Yunnan provinces of southern China. Mang was formerly included, but is now considered by Paul Sidwell to form its own separate branch within Austroasiatic.
Bruu is a Mon–Khmer dialect continuum spoken by the Bru people of mainland Southeast Asia. Sô and Khua are dialects.
The Melanau–Kajang languages or Central Sarawak languages are a group of languages spoken in Kalimantan, Indonesia and Sarawak, Malaysia by the Kenyah, Melanau and related peoples.
The Kenyah languages are a group of half a dozen or so closely related languages spoken by the Kenyah peoples of Borneo. They are:
Proto-Austroasiatic is the reconstructed ancestor of the Austroasiatic languages. Proto-Mon–Khmer has been reconstructed in Harry L. Shorto's Mon–Khmer Comparative Dictionary, while a new Proto-Austroasiatic reconstruction is currently being undertaken by Paul Sidwell.
Katu, or Low Katu, is a Katuic language of eastern Laos and central Vietnam.
Ta'Oi is a Katuic dialect chain of Salavan and Sekong provinces in Laos, and in Thừa Thiên-Huế province in Vietnam.
Phuong, or High Katu, is a Katuic language (Mon-Khmer) of Vietnam.
The Angkuic languages are spoken in Yunnan province, China and Shan State, Burma.
Paul James Sidwell is an Australian linguist based in Canberra, Australia who has held research and lecturing positions at the Australian National University. Sidwell, who is also an expert and consultant in forensic linguistics, is most notable for his work on the historical linguistics of the Austroasiatic language family, and has published reconstructions of the Austroasiatic, Bahnaric, Katuic, Palaungic, Khasic, and Nicobaric proto-languages. Sidwell is currently the President of the Southeast Asian Linguistics Society (SEALS) and also regularly organises the International Conference on Austroasiatic Linguistics (ICAAL).
The Proto-Khmeric language is the reconstructed proto-language of the Khmeric languages. It has been reconstructed by Sidwell & Rau (2015), whose reconstruction is based on the sound laws provided in Ferlus (1992). It is agreed by most scholars that this language was phased out by 300 CE.
Proto-Palaungic is the reconstructed proto-language of the Palaungic languages of mainland Southeast Asia.
