Harun is the Arabic and Turkish form of Aaron, the brother of Moses, whose name is of uncertain, possibly Egyptian origin and is traditionally explained as "high mountain" or "exalted". Harun al-Rashid, the Abbasid caliph of the Arabian Nights, made it a legendary name in the Islamic world. In the United States Harun peaked at number 2,279 in 2022 and ranks number 2,729 among boys in 2025, with 47 births.