Given its status as a resource-rich district, the corporate footprint in Sivasagar is dominated by the energy and agricultural sectors.
* **Oil and Natural Gas Corporation (ONGC):** A massive central public sector enterprise, ONGC is the largest corporate presence in the region, driving the local economy. * **Assam Company India Limited:** One of the oldest tea companies in India, with historic ties to the tea estates surrounding Sivasagar. * **Local Enterprises:** The city supports numerous localized businesses in agro-processing, tea brokering, and traditional handloom production.

