Lij Iyasu was the designated Emperor of Ethiopia from 1913 to 1916. His baptismal name was Kifle Yaqob. Ethiopian emperors traditionally chose their regnal name on the day they were crowned, and since he was never crowned, he is usually referred to as Lij Iyasu, "Lij" meaning child, especially one born of royal blood.

Until the end of the Ethiopian monarchy in 1974, there were two categories of nobility in Ethiopia and Eritrea. The Mesafint, the hereditary royal nobility, formed the upper echelon of the ruling class. The Mekwanint were the appointed nobles, often of humble birth, who formed the bulk of the aristocracy. Until the 20th century, the most powerful people at court were generally members of the Mekwanint appointed by the monarch, while regionally, the Mesafint enjoyed greater influence and power. Emperor Haile Selassie greatly curtailed the power of the Mesafint to the benefit of the Mekwanint, who by then were essentially coterminous with the Ethiopian government.