The Dahlak Archipelago (Ge'ez: ዳህላክ) is an island group located in the Red Sea near Massawa, Eritrea. It consists of two large and 124 small islands. The pearl fisheries of the archipelago have been famous since Roman times and still produce a substantial number of pearls. Only four of the islands are permanently inhabited, of which Dahlak Kebir is the largest and most populated. Other islands of the archipelago are Dhuladhiya, Dissei, Dohul (Dehil), Erwa, Harat, Harmil, Isra-Tu, Nahaleg, Nakura, Nora (Norah) and Shumma, although only Nora and Dohul are permanently inhabited, besides the main island. The islands are home to a diverse marine life and sea-birds, and attract an increasing number of tourists. Residents of the archipelago speak Dahlik, an Afro-Asiatic language of the Semitic branch. The islands can be reached by boat from Massawa.
G.W.B. Huntingford has identified with the Dahlak archipelago a group of islands near Adulis called "Alalaiou" in the Periplus of the Erythraean Sea which were a source of tortoise shell. According to Edward Ullendorff, the Dahlak islanders were amongst the first in the Horn of Africa to embrace Islam, and a number of tombstones in Kufic script attest to this early connection.
In the 7th century, an independent Muslim state emerged in the archipelago. However, it was subsequently conquered by Yemen, then intermittently by the Kingdom of Medri Bahri (Land of the Sea). In 1517 the Ottoman Turks conquered the islands and placed them under the rule of the Pasha at Suakin as part of the province of Habesh.
The Italian colony of Eritrea, formed in 1890, included the archipelago. However, during this time the islands were home to little except the Nocra prison camp operated by the Italian colonial forces.
After Ethiopia allied itself with the Soviet Union during the Cold War, following the rise of the Derg, the Dahlak Archipelago was the location of a Soviet Navy base. In 1990, Ethiopia lost control of the Dahlak Archipelago and the northern Eritrean coast to the Eritrean independence movement (EPLF) and by 1991 Ethiopia had lost control of all of Eritrea. Following the international recognition of Eritrean independence in 1993, the Dahlak Archipelago became a part of Eritrea.
- "Ethiopia: The Armed Forces". Retrieved 2006-10-25.
- Dahlak – Reef pearls of the Red Sea – Dahlak Islands informative site