The Northeast Frontier Railway is one of the 19 railway zones of the Indian Railways. It is headquartered in Maligaon, Guwahati in the state of Assam, and responsible for operation and expansion of rail network all across Northeastern states and some districts of eastern Bihar and northern West Bengal.

Guwahati is the largest city of the Indian state of Assam, and also the largest metropolis in northeastern India. Dispur, the capital of Assam, is in the circuit city region located within Guwahati and is the seat of the Government of Assam. Its airport is the 12th busiest in India, the Lokpriya Gopinath Bordoloi International Airport. A major riverine port city along with hills, and one of the fastest growing cities in India, Guwahati is situated on the south bank of the Brahmaputra. The city is known as the "gateway to North East India".