Algeria officially the People's Democratic Republic of Algeria (also formally referred to as the Democratic and Popular Republic of Algeria),is a country in the Maghreb. In terms of land area, it is the largest country in Africa, the Arab World and the Mediterranean Sea. Overall, it is the 10th-largest country in the world.

Algeria is bordered in the northeast by Tunisia, in the east by Libya, in the west by Morocco, in the southwest by Western Sahara, Mauritania, and Mali, in the southeast by Niger, and in the north by the Mediterranean Sea. Its size is almost 2,400,000 square kilometres (926,645 sq mi), and it has an estimated population of 35.7 million (2010).The capital of Algeria is Algiers.

Algeria is a member of the Arab League, United Nations, African Union, and OPEC. It is also a founding member of the Arab Maghreb Union.