The Ahom or Tai-Ahom is an ethnic group from the Indian states of Assam and Arunachal Pradesh. The members of this group are admixed descendants of the Tai people who reached the Brahmaputra valley of Assam in 1228 and the local indigenous people who joined them over the course of history. Sukaphaa, the leader of the Tai group and his 9,000 followers established the Ahom kingdom, which controlled much of the Brahmaputra Valley in modern Assam until 1826.

Assam is a state in northeastern India, south of the eastern Himalayas along the Brahmaputra and Barak River valleys. Assam covers an area of 78,438 km2 (30,285 sq mi). It is the second largest state in northeastern India by area and the largest in terms of population. The state is bordered by Bhutan and Arunachal Pradesh to the north; Nagaland and Manipur to the east; Meghalaya, Tripura, Mizoram and Bangladesh to the south; and West Bengal to the west via the Siliguri Corridor, a 22-kilometre-wide (14 mi) strip of land that connects the state to the rest of India. Assamese and Boro are the official languages of Assam. Meitei (Manipuri) is the official language of Hojai district and the entirety of the Barak Valley districts, while Bengali is an official language in the three districts of Barak Valley.