Amha Selassie was Emperor-in-exile of Ethiopia. As son of Haile Selassie, he was Crown Prince and was proclaimed monarch three times. He was first proclaimed Emperor during an unsuccessful coup attempt against his father in December 1960, during which he alleged that he was detained and compelled to accept the title. After his father was deposed in a later coup, he was proclaimed King in absentia by the Derg on 12 September 1974 in an act which he never accepted as legitimate and that ended in the abolition of the Ethiopian monarchy on 21 March 1975. He was again proclaimed Emperor in exile on 8 April 1989. This time he sanctioned the proclamation and accepted its legitimacy. After his accession, his full reign name was His Imperial Majesty Emperor Amha Selassie I, Elect of God, Conquering Lion of the Tribe of Judah and King of Kings of Ethiopia.

The emperor of Ethiopia, also known as the Atse, was the hereditary ruler of the Ethiopian Empire, from at least the 13th century until the abolition of the monarchy in 1975. The emperor was the head of state and head of government, with ultimate executive, judicial and legislative power in that country. A National Geographic article from 1965 called imperial Ethiopia "nominally a constitutional monarchy; in fact [it was] a benevolent autocracy".