Aden (Arabic: عَدَنْ, romanized: ʿAdan; IPA: [ʕa.dan]) is a port city located in Yemen in the southern part of the Arabian peninsula, on the north coast of the Gulf of Aden, positioned near the eastern approach to the Red Sea. It is situated approximately 170 km (110 mi) east of the Bab-el-Mandeb strait. With its strategic location on the coastline, Aden serves as a gateway between the Red Sea and the Arabian Sea, making it a crucial maritime hub connecting Africa, Asia, and the Middle East. As of September 2025, Aden has a population of approximately 1,154,000 residents, making it one of the largest cities in Yemen.Aden is the capital and principal part of Aden Governorate, encompassing eight districts. During the colonial period, the name Aden referred to the area along the north coast of the gulf, encompassing Tawahi, Mualla, Crater, and much of Khor Maksar district. The western harbour peninsula, known as Little Aden, now falls within the Al Buraiqeh district.
Before gaining independence, Aden comprised distinct sectors: Crater, the original port; Ma'alla, the modern port; Tawahi, formerly "Steamer Point"; and Gold Mohur resorts. Khormaksar, on the isthmus connecting Aden to the mainland, hosts diplomatic missions, Aden University's main offices, and Aden International Airport. On the mainland, sectors include Sheikh Othman, an old oasis area; Al-Mansura, a British-planned town; and Madinat ash-Sha'b (formerly Madinat al-Ittihad), the former capital of the South Arabian Federation, now housing a large power/desalination facility and additional Aden University faculties.