Dibrugarh is a city, and the headquarters of Dibrugarh district, in Assam, India. It is the one of the largest cities of Assam. The district of Dibrugarh, having only one sub-division, is situated in the eastern part of Assam. Dibrugarh is an important city of Assam, along with Guwahati, Jorhat, and Silchar, and it is one of the more affluent districts of Assam.
Dibrugarh district is surrounded by Dhemaji district in the north and a part of Lakhimpur district in the north-west, part of Sivasagar district to the west, and Tinsukia district in the east