Alyemda (Arabic: اليمدا‎‎ - al-Yamdā), internationally known as Democratic Yemen Airlines or just Yemen Airlines, was the flag carrier airline of South Yemen. It was established at Aden on 11 March 1971 after nationalizing Brothers Air Services (BASCO) which was a private company owned by the Ba Haroon Brothers.

Its head office was in the Alyemda Building in Khormaksar, Aden.

Alyemda was founded in 1971, four years after the independence of South Yemen, and operated a network of flight routes throughout Africa and the Middle East, with its hub at Aden Airport, the former Khormaksar Air Force Base. The airline started with a fleet of Douglas DC-6s and DC-3/C-47 propliners and by the mid 1970s Alyemda acquired a fleet of Boeing 707/720 jetliners followed by three brand new De Havilland Dash 7 turboprop liners in 1979. In 1983 Alyemda got its first brand new Boeing 737-200ADV which was mostly used for domestic and regional flights, also the Tupolev Tu-154 joined the fleet by the mid 1980s and later the Airbus A310-304 jetliner in 1993. Following the unification of Yemen in 1990, the airline was renamed first Alyemda Air Yemen in 1992, and later in 1995 Alyemen Airlines of Yemen. On 11 February 1996, Alyemda merged into Yemenia to create a single national airline for Yemen.

Over the years of its existence, Alyemda operated the following aircraft types:

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