Ilyas ibn Asad (died 856) was a Samanid ruler of Herat (819–856).
In 819 Ilyas was granted authority over the city of Herat by Caliph Al-Ma'mun's governor of Khorasan, Ghassan ibn 'Abbad, as a reward for his support against the rebel Rafi' ibn Laith.
When he died in 856, control of Herat was given to his son Ibrahim.
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