The Niger Delta, the delta of the Niger River in Nigeria, is a densely populated region sometimes called the Oil Rivers because it was once a major producer of palm oil. The area was the British Oil Rivers Protectorate from 1885 until 1893, when it was expanded and became the Niger Coast Protectorate.

The Niger Delta, as now defined officially by the Nigerian government, extends over about 70,000 km² and makes up 7.5% of Nigeria’s land mass. Historically and cartographically, it consists of present day Bayelsa, Delta, and Rivers States. In 2000, however, Obansanjo's regime included Abia, Akwa-Ibom, Cross River State, Edo, Imo and Ondo States in the region. Some 31 million people of more than 40 ethnic groups including the Efik, Ibibio, Annang, Oron, Ijaw, Itsekiri, Igbo, Isoko, Urhobo, Yoruba, and Kalabari, are among the inhabitants in the Niger Delta, speaking about 250 different dialects.

The Niger Delta, and the "South South Zone", which includes Akwa Ibom State, Bayelsa State, Cross River State, Delta State, Edo State and Rivers State are two different entities. While the Niger Delta is the oil producing region the South South Zone is a geo-political zone.

Niger (French pronunciation: [niʒɛʁ], but occasionally pronounced as /niːˈʒɛər/ or ⁱ/ˈnaɪdʒər/), officially the Republic of Niger, is a landlocked country in Western Africa, named after the Niger River. It borders Nigeria and Benin to the south, Burkina Faso and Mali to the west, Algeria and Libya to the north and Chad to the east. Niger covers a land area of almost 1,270,000 km², making it the largest nation in West Africa, with over 80 percent of its land area covered by the Sahara desert. The country's predominantly Islamic population of just above 15,000,000 is mostly clustered in the far south and west of the nation. The capital city is Niamey, located in the far southwest corner of Niger.

Niger is a developing country, and consistently ranks as one of the lowest ranks of the United Nations' Human Development Index (HDI), 186th of 187 countries in 2011. Much of the non-desert portions of the country are threatened by periodic drought and desertification. The economy is concentrated around subsistence and some export agriculture clustered in the more fertile south, and the export of raw materials, especially uranium ore. Niger remains handicapped by its landlocked position, desert terrain, poor education and poverty of its people, lack of infrastructure, poor health care, and environmental degradation.