The Sokol Altius is a medium-altitude long-endurance Russian unmanned aerial vehicle developed by OKB Sokol (formerly known as ) and Tranzas to perform reconnaissance, strike and electronic attack missions on behalf of the Russian Air Force and Navy. The program started in 2011 and thus far 3 prototypes have been built. The Altius is comparable to the striking and reconnaissance capabilities of the US-made RQ-9 Reaper and RQ-4 Global Hawk UAVs.