The corporate landscape of Dibrugarh is anchored by heavy industry and agriculture.
* **Oil India Limited (OIL):** A Navratna public sector company with its registered headquarters in Duliajan, Dibrugarh district. * **Brahmaputra Cracker and Polymer Limited (BCPL):** Operating the massive Assam Gas Cracker Project located in Lepetkata. * **Tea Corporations:** Numerous tea corporate giants operate estates and regional offices here, including McLeod Russel, Assam Company, and Goodricke Group. * **Assam Roofing Limited:** A prominent manufacturing entity serving the regional construction market.
