}}
}}
| label4 = Population
| data4 = 140,683,144 (2020 est.)
| label5 = Area
| data5 = 1,882,757 km2
}}
The Horn of Africa (HoA), also known as the Somali Peninsula,[2][3][4] is a large peninsula and geopolitical region in East Africa.[5] Located on the easternmost part of the African mainland, it is the fourth largest peninsula in the world. It is composed of SomaliaSomaliland), Djibouti, Ethiopia, and Eritrea.[6] Although not common, broader definitions include parts or all of Kenya and Sudan.[7][8][9] It has been described as a region of geopolitical and strategic importance, since it is situated along the southern boundary of the Red Sea; extending hundreds of kilometres into the Gulf of Aden, Guardafui Channel, and Indian Ocean, it also shares a maritime border with the Arabian Peninsula.[10][11][12][13]
^Encyclopædia Britannica, inc, Jacob E. Safra, The New Encyclopædia Britannica, (Encyclopædia Britannica: 2002), p.61: "The northern mountainous area, known as the Horn of Africa, comprises Djibouti, Ethiopia, Eritrea, and Somalia."
^John I. Saeed, Somali – Volume 10 of London Oriental and African language library, (J. Benjamins: 1999), p. 250.
^Sandra Fullerton Joireman, Institutional Change in the Horn of Africa, (Universal-Publishers: 1997), p.1: "The Horn of Africa encompasses the countries of Ethiopia, Eritrea, Djibouti, and Somalia. These countries share similar peoples, languages, and geographical endowments."