Arethas ( el, ) is the Greek form of the Arab name al-Harith ( ar, الحارث "al-Ḥārith"). It can refer to: * Arethas (martyr) (died 523), Arab Christian martyr in Yemen *

Al-Harith ibn Jabalah Al-Ḥārith ibn Jabalah ( ar, الحارث بن جبلة; ''FlaviosArethas () in Greek sources; Khālid ibn Jabalah () in later Islamic sources), was a king of the Ghassanids, a pre- Islamic Arab Christian tribe who lived on the eastern frontie ...

, Ghassanid king (r. 528–569) * Arethas of Caesarea (fl. 10th-century), Byzantine scholar and archbishop of Caesarea (modern Kayseri, Turkey)

See also