Samiei was working as the club’s acting president since parting ways with Ali Khatir on May 1.
He is a lawyer and has nearly two decades of experience in the role.
Under his leadership, Esteghlal has completed signing of Milad Zakipour, Saman Fallah, and Ramin Rezaeian so far.
Esteghlal is one of the most popular football teams in Iran.