Assamese is the most widely spoken language in the Northeastern Region of India, with over 15 million speakers. It is the official language of the state of Assam and is also spoken in parts of Arunachal Pradesh, Nagaland, and Meghalaya.

Kokborok is a Tibeto-Burman language spoken by the Tripuri people of Tripura. It is closely related to Assamese and shares many similarities in grammar and vocabulary.

Manipuri is a Tibeto-Burman language spoken by the Meitei people of Manipur. It is the official language of the state and is also spoken in parts of Assam and Nagaland.

Naga is a group of Tibeto-Burman languages spoken by the Naga people of Nagaland. There are many different Naga languages, each with its own unique dialect. Ao, Angami, and Sema are some of the major Naga languages.

Mizo is a Tibeto-Burman language spoken by the Mizo people of Mizoram. It is the official language of the state and is also spoken in parts of Manipur and Assam.

Karbi is a Tibeto-Burman language spoken by the Karbi people of Assam. It is recognized as one of the official languages of the state and is also spoken in parts of Meghalaya and Nagaland.

Bodo is a Tibeto-Burman language spoken by the Bodo people of Assam. It is recognized as one of the official languages of the state and is also spoken in parts of West Bengal and Arunachal Pradesh.

Dimasa is a Tibeto-Burman language spoken by the Dimasa people of Assam. It is recognized as one of the official languages of the state and is also spoken in parts of Nagaland and Manipur.

Khasi is an Austroasiatic language spoken by the Khasi people of Meghalaya. It is recognized as one of the official languages of the state and is also spoken in parts of Assam and Bangladesh.

Garo is a Tibeto-Burman language spoken by the Garo people of Meghalaya. It is recognized as one of the official languages of the state and is also spoken in parts of Assam and Bangladesh.

Jaintia is a Tibeto-Burman language spoken by the Jaintia people of Meghalaya. It is recognized as one of the official languages of the state and is also spoken in parts of Assam and Bangladesh.

Rabha is a Tibeto-Burman language spoken by the Rabha people of Assam. It is recognized as one of the official languages of the state and is also spoken in parts of West Bengal and Arunachal Pradesh.

Lalung is a Tibeto-Burman language spoken by the Lalung people of Assam. It is recognized as one of the official languages of the state and is also spoken in parts of Arunachal Pradesh.

Deori is a Tibeto-Burman language spoken by the Deori people of Assam. It is recognized as one of the official languages of the state and is also spoken in parts of Arunachal Pradesh.

Sonowal Kachari is a Tibeto-Burman language spoken by the Sonowal Kachari people of Assam. It is recognized as one of the official languages of the state and is also spoken in parts of Arunachal Pradesh.