Stop Iranian Drones Act This bill expands existing provisions requiring sanctions against individuals or entities that provide certain types of weapons to Iran. Specifically, the bill modifies the provisions by adding unmanned combat aerial vehicles to the list of weapons covered by the sanctions. The bill also requires the Department of State to periodically report to Congress on the identities of any Iranian entity that has attacked a U.S. citizen using an unmanned combat aerial vehicle. The President must designate any such entity as a foreign terrorist organization.