Assamese or Asamiya (অসমীয়া [ɔˈxɔmija] ) is an Indo-Aryan language spoken mainly in the north-eastern Indian state of Assam, where it is an official language. It has long served as a lingua franca in parts of Northeast India. It has over 15 million native speakers and 8.3 million second language speakers according to Ethnologue.
Nefamese, an Assamese-based pidgin in Arunachal Pradesh, was used as a lingua franca before being replaced by Hindi; and Nagamese, an Assamese-based Creole language, continues to be widely used in Nagaland. The Kamtapuri language of Rangpur Division of Bangladesh and the Cooch Behar and Jalpaiguri districts of India is linguistically closer to Assamese, though the speakers identify with the Bengali culture and the literary language. In the past, it was the court language of the Ahom kingdom from the 17th century.