Nagaland () is a landlocked state in the north-eastern region of India. It is bordered by the Indian states of Arunachal Pradesh to the north, Assam to the west, Manipur to the south, and the Sagaing Region of Myanmar (Burma) to the east. Its capital city is Kohima and its largest city is the twin Chümoukedima–Dimapur. The state has an area of 16,579 square kilometres (6,401 sq mi) with a population of 1,980,602 as per the 2011 Census of India, making it one of the smallest states of India.

Nagaland became the 16th state of India on 1 December 1963. It is home to a rich variety of natural, cultural, and environmental resources.

Nagaland is a mountainous state and lies between the parallels of 95° and 94° eastern longitude and 25.2° and 27.0° latitude north. The high-profile Dzüko Valley is at Viswema, in the southern region of the state.

The state has significant resources of natural minerals, petroleum, and hydropower, with agriculture as the state's most important economic activity, accounting for over 70% of its economy. Other significant activities include forestry, tourism, insurance, real estate, horticulture, and miscellaneous cottage industries.

The state has experienced insurgency and inter-ethnic conflict since the 1950s, limiting its economic development.