- a country in southern Arabia, formed in 1990 by the merger of the Yemen Arab Republic and the People's Democratic Republic of Yemen. 207,000 sq. mi. (536,130 sq. km). Sanʿa. Aden.
- a former country in southwestern Arabia: since 1990 a part of the Republic of Yemen. Capital: Sanʿa.
- a former country in southern Arabia: since 1990 a part of the Republic of Yemen. Capital: Aden.
- a republic in SW Arabia, on the Red Sea and the Gulf of Aden: formed in 1990 from the union of North Yemen and South Yemen: consists of arid coastal lowlands, rising to fertile upland valleys and mountains in the west and to the Hadhramaut plateau in the SE: the north and east contains part of the Great Sandy Desert. Official language: Arabic. Official religion: Muslim. Currency: riyal. Capital: San`a. Pop: 25 408 288 (2005 est). Area (including territory claimed by Yemen along the undemarcated eastern border with Saudi Arabia): 472 099 sq km (182 278 sq miles)
