Vahrez or Wahrīz was a Dailamite spahbed (commander) in the service of the Sassanid Empire. He was the head of a small expeditionary force of low ranking Azatan (Azadan) nobility, numbering around 700, sent by Khosrau I to Yemen. The Yemenites had requested Khosrau's assistance against the Ethiopians of Axum, who had occupied large parts of the country. Sayf ibn Dhi Yazan, the son of Dhu Yazan, went to Khosrau and offered him all of Yemen if his army would defeat the Ethiopians.