Yemen's temporary capital is Aden.
Aden . Aden was the capital of the People 's Democratic Republic of Yemen until that country 's unification with the Yemen Arab Republic in 1990 , and again briefly served as Yemen 's temporary capital during the aftermath of the 2014 -- 15 Yemeni coup d'état , as declared by President Abd Rabbuh Mansur Hadi after he fled the Houthi occupation of Sana'a . Yemen . Because of this , Yemen 's capital has been temporarily relocated to the port city of Aden , on the southern coast .