See also First Italo-Ethiopian War.

The Second Italo–Abyssinian War (also referred to as the Second Italo-Ethiopian War) was a brief colonial war that started in October 1935 and ended in May 1936. The war was fought between the armed forces of the Kingdom of Italy (Regno d"Italia) and the armed forces of the Ethiopian Empire (also known as Abyssinia). The war resulted in the military occupation of Ethiopia and its annexation into the newly created colony of Italian East Africa (Africa Orientale Italiana, or AOI).

Politically, the war is best remembered for exposing the inherent weakness of the League of Nations. Like the Mukden Incident in 1931 (the Japanese annexation of three Chinese provinces), the Abyssinia Crisis in 1934 is often seen as a clear example of the ineffectiveness of the League. Both Italy and Ethiopia were member nations and yet the League was unable to control Italy or to protect Ethiopia when Italy clearly violated the League"s own Article X. The war is also remembered for the illegal use of mustard gas and phosgene by the Italian armed forces.

The positive outcome of the war for the Italians coincided with the zenith of the popularity of dictator Benito Mussolini"s Fascist regime, in a phase called "the age of consensus."