Jorhat is an administrative district of the Indian state of Assam situated in the central part of the Brahmaputra Valley. The district is bounded by Majuli on north, Nagaland state on the south, Sivasagar on the east and Golaghat on the west. On the north of the district, the river Brahmaputra forms the largest riverine island of the world. The administrative seat is at Jorhat city.

Majuli district is situated on Majuli, the largest river island in the world, in the Brahmaputra River in Northeastern Assam. It is also the first island district of the country.