Guwahati Refinery was set up at Noonmati in Guwahati on January 1, 1962. Guwahati Refinery is the first Public Sector refinery of India and belongs to Indian Oil Corporation Limited.

The refinery was inaugurated by Late Pandit Jawahar Lal Nehru, the first Prime Minister of independent India.

The refinery was built with Romanian Collaboration and has a capacity of 1.0 million metric tonnes per annum.