Arethas

Arethas (Ἀρέθας) is the Greek form of the Arab name al-Harith (الحارث "al-Ḥārith"). It can refer to:


 * Arethas (martyr) (died 523), Arab Christian martyr in Yemen
 * Al-Harith ibn Jabalah, Ghassanid king (r. 528–569)
 * Arethas of Caesarea (fl. 10th-century), Byzantine scholar and archbishop of Caesarea (modern Kayseri, Turkey)