GK Complex Systems is a Russian technology group that develops, manufactures, and supports software, hardware, and regional information systems. Its work also includes analysis of industries, service markets, and business and organizational processes. The group combines software engineering with electronics, manufacturing, infrastructure, and applied technology.

Its software offerings include production, logistics, and sales management through the APLR system; hotel automation solutions; a commercial management module; and the Dolphin platform for educational, community, and corporate organizations. The company also provides data-center services, including colocation, server administration, and rack rental.

GK Complex Systems develops and produces perimeter security and video-surveillance systems, signal generators, unmanned aircraft, electric motors, and servo drives. Its drone range includes the Phoenix 3 and Phoenix 3M, as well as a tethered model; the aircraft are designed for remote observation and cargo delivery. Other capabilities include optoelectronic module development, contract microelectronics assembly, and solar and wind power generation. The group also undertakes bespoke information-system development and supports complex software and hardware solutions throughout their lifecycle.