The capital city of Yemen is Sana'a. Aden is a city, and since 2015, the temporary capital of Yemen, near the eastern approach to the Red Sea (the Gulf of Aden), some 170 km (110 mi) east of the strait Bab-el-Mandeb.

Sanaa also spelled Sana'a or Sana, are the largest city in Yemen and the center of the Sanaa Governorate. The city is not part of the Governorate, but forms the separate administrative district of "Amanat Al-Asemah". Under the Yemeni constitution, Sana'a is the capital of the country although the seat of the Yemeni government moved to Aden, the former capital of South Yemen in the aftermath of the Houthi occupation. Aden was declared the temporary capital by President Abdrabbuh Mansur Hadi in March 2015.