Distributed in Dibrugarh and Tinsukia districts of Upper Assam, there is still presence of some tribes which belong to Buddhists who are believer of the Hinyana sect of Buddhism. Though their population is very few but they are still maintaining their own ethnic cultures and other rituals.
Khamti Tribe: The Khamti tribe is a sub group of the Shan people found mainly in Burma and Arunachal Pradesh. However a small number of this community can be found in Assam (Tinsukia District) also. They pray every morning in their rooms and provide offerings of flowers and food. Like any other Buddhist they are peace loving people.
Singpho Tribe: Though major hubs of Singpho tribe are exist in China and Myanmar, it is seen in Eastern Arunachal Pradesh and near about 25,000 numbers is still seen in Tinsukia district, Upper Assam too, presently known as Dehing Patkai region. This Mongoloid tribe was the first to discover the process of tea cultivation in India. They taught the process to the British, who then grew the Indian tea trade exponentially without giving the Singpho community their due credit. Like Khamti they also follow Buddhism and Animism is also widely followed in this community. Agriculture is main source of income and tea is widely planted.
Tai Phake Tribe: Tai-Phake is among the 6 Tai races residing in Tinsukia Districts of Assam, who migrated to Assam during year 1775. From then, for around 75 years, they were roaming for a permanent settlement. Ultimately they settled in Dibrugarh district, near Naharkatia on the bank of river Burhi dehing river and established ‘Namphake village’ and ‘Tipam Phake village’ and rest settled in Tinsukia district near Margerita sub division. From then they have been living permanently there and their literature, culture and society started flourishing in various aspects. Tai Phake people are strict followers of Buddhism and falls under the category of Hinayana sect. In each village they establish a Buddha Bihar where Buddha images made of brass are installed and regular prayers are offered by monks (known as Chow Moun) and the villagers.