Dhemaji district (Assamese: ধেমাজি জিলা) is an administrative district in the state of Assam in India. The district headquarters are located at Dhemaji. The district occupies an area of 3237 km² and has a population of 571,9.
Dhemaji is one of the youngest district of Assam. It came into being on 1 October, 1989. It is one of the remotest district of India, at the easetern-most part of Assam. Situated in the foothills of the lower Himalyas it is relatively a small town.