अल्जीरिया, अधिकारिक तौर पर अल्जीरिया का जन-लोकतंत्रीय गणराज्य और जिसको रसमी तौर पर लोकतंत्रीय और लोग-प्यारा अलजीरियायी गणराज्य भी कहा जाता है, अफ़्रीका के मघरेब क्षेत्र में स्थित एक देश है जिसकी राजधानी और सबसे अधिक आबादी वाला शहर अल्जीयर्स है।

Algeria, officially the People's Democratic Republic of Algeria, is a country in North Africa. Algeria is bordered to the northeast by Tunisia; to the east by Libya; to the southeast by Niger; to the southwest by Mali, Mauritania, and Western Sahara; to the west by Morocco; and to the north by the Mediterranean Sea. It is considered part of the Maghreb region of North Africa. It has a semi-arid climate, with most of the population living in the fertile north and the Sahara dominating the geography of the south. Algeria covers an area of 2,381,741 square kilometres (919,595 sq mi), making it the world's tenth largest nation by area, and the largest nation in Africa, more than 200 times as large as the continent's smallest country, The Gambia. With a population of 44 million, Algeria is the tenth-most populous country in Africa, and the 32nd-most populous country in the world. The capital and largest city is Algiers, located in the far north on the Mediterranean coast.