Name given to U.S. reconnaissance drones flown over North Vietnam during the 1960s and early 1970s to collect tactical intelligence and strategic intelligence. These unmanned aircraft were launched from airborne DC-130 Hercules cargo aircraft that remained over friendly territory; after their photo flight, the drones flew back to a location where they could be landed and have their film recovered; drones were reusable.

At the peak of the Buffalo Hunter operations, the drones made 30 to 40 flights per month over North Vietnam and adjacent areas of Indochina controlled by communist forces.