Ethiopia–Somalia relations are bilateral relations between Ethiopia and Somalia. These relations are characterized by the land border shared by the two countries and a number of military conflicts in past years.

The Ethiopian–Adal War or Abyssinian–Adal War, also known in Arabic as the "Futuḥ al-Ḥabash", was a military conflict between the Christian Ethiopian Empire and the Muslim Adal Sultanate from 1529 to 1543. The Christian Ethiopian troops consisted of the Amhara, Tigrayans, Tigrinya and Agaw people, and at the closing of the war, supported by a few hundred Portuguese musketmen. Whereas Adal forces were mainly composed of Harla, Somali, Afar, as well as Arab and Turkish gunmen. Both sides at times would see the Maya mercenaries join their ranks.