The global defense external lighting market is estimated at USD 0.21 billion in 2026 and is projected to reach USD 0.29 billion by 2036, expanding at a 3.40% compound annual growth rate. Demand is being supported by military fleet modernization, increasing night operations, advanced avionics integration and the need for dependable navigation and formation lighting across fighter jets, transport aircraft, helicopters, aerial refueling tankers and unmanned aerial systems. The systems improve visibility, flight safety, spatial awareness and coordination during low-visibility missions, tactical maneuvers and training exercises. Technology development is bringing longer-lasting, lower-consumption light-emitting diode systems, dual visible and covert infrared modes compatible with night vision devices, programmable flash patterns, smart controls and ruggedized designs. Integration with aircraft avionics is enabling synchronized operation and improved situational awareness. Flight-safety requirements, multinational exercises, joint operations, fleet replacement, unmanned aircraft deployment and investment in mission systems are supporting growth. North America is expected to remain the leading region, while Europe, Asia-Pacific and the Middle East are also generating demand through defense programs, fleet upgrades, higher budgets and advanced aircraft procurement. Retrofit projects, modular products, indigenous aerospace initiatives and requirements for lower detectability, infrared capability, compatibility and reliability are identified as key opportunities through 2036.