Block the Use of Transatlantic Technology in Iranian Made Drones Act This bill requires plans to prevent Iran from acquiring certain technologies related to unmanned aircraft systems (UAS). The bill requires the Department of Commerce to develop a strategy to supplement the existing U.S. sanctions regime against Iran by preventing the export to Iran of certain technologies (including microcontrollers, voltage regulators, and microprocessors) that can be used in the development and employment of UAS. The Department of State must develop a strategy to engage with European and Asian allies and partners to prevent the export of these technologies to Iran by such allies and partners. The Department of Defense must develop a range of options that may be employed by the U.S. Armed Forces to counter or deny the ability of Iran to acquire these technologies, computer-aided design software, and computer numerical control machines.