Japan Aerospace And Defense Market Size & Share Analysis - Growth Trends and Forecast (2026 - 2031)

Japan Aerospace And Defense Market Trends and Insights

Rising Defense Spending Aligned With the 2% of GDP Target

The FY 2025 defense budget reached JPY 8.7 trillion (USD 56 billion), marking a 7.2% year-on-year increase and positioning the plan on a glide path to achieve the 2% of GDP objective by FY 2027. Tax hikes that take effect in 2026 provide a recurring revenue stream, enabling multi-year missile, cyber-defense, and space projects. Funding priorities shift toward stand-off munitions and network-centric systems, prompting new orders for electronic-warfare suites, data-link terminals, and low-latency satellite links. The December 2024 US-Japan Extended Deterrence Guidelines institutionalize joint contingency planning, which raises interoperability standards and accelerates the procurement of common encrypted communication equipment. These dynamics enlarge the Japan aerospace and defense market by opening budget headroom for both acquisition and sustainment.

Expansion of Next-Generation Fighter Aircraft and Combat Aviation Programs

GCAP launched a trilateral government organization in December 2023 to field a sixth-generation fighter by 2035, with Mitsubishi Heavy Industries leading domestic workshare.^{[1]“GCAP Fighter Program,” Financial Times, ft.com} Revised export rules issued in March 2024 permit the aircraft to be sold to third countries, a move intended to increase production volume and reduce unit cost. Parallel F-35A and F-35B deliveries continue, expanding aerial deterrence while mitigating risks to the GCAP schedule. However, engineering resources are stretched as the same teams juggle F-35 final assembly, F-2 upgrades, and early F-3 prototyping. The workstream fuels subsystem orders for advanced sensors, composite wings, and next-generation turbofans, lifting the Japan aerospace and defense market during the development phase and into serial production.

Post-Pandemic Recovery in Commercial Aviation MRO Demand

Japan Airlines and ANA Holdings placed combined orders for 154 widebody jets, worth more than USD 20 billion, in 2024-2025, signaling renewed confidence in passenger and cargo demand. Legacy hangars that were downsized during the pandemic now confront 12-month engine-overhaul backlogs, driving carriers to expand domestic maintenance capacity. In August 2024, JAL and Mitsubishi Heavy Industries signed a memorandum of understanding aimed at implementing predictive analytics to reduce unscheduled engine removals by 20%.^{[2] “Type 12 Missile Range Extension,” Nikkei Asia, asia.nikkei.com} These moves boost MRO revenue, thereby lifting the share of high-margin services within the Japan aerospace and defense market.

Government Incentives for Indigenous Missile and Hypersonic Development

Mitsubishi Heavy Industries has received contracts to extend the range of the Type 12 Surface-to-Ship Missile beyond 1,000 kilometers, with initial deliveries scheduled between fiscal years 2024 and 2026. Budget earmarks also back the Hyper Velocity Gliding Projectile, where IHI provides scramjet propulsion. Dedicated funding and streamlined acquisition processes shorten lead times; however, limited domestic test infrastructure necessitates partnering with allied ranges, which slows iteration cycles. Nonetheless, program spending enlarges the sensor, propulsion, and guidance subsectors within the Japan aerospace and defense market.

Stringent Export-Control Policies Limiting Production Scale and Market Expansion

Revised export rules permit the sale of co-developed systems only with unanimous partner approval, introducing a veto risk that curbs production runs and keeps unit costs high. Without foreign orders, the F-3 program would be able to build fewer than 100 airframes, which would undermine economies of scale. Domestic primes continue to lobby for additional liberalization, but public opinion remains cautious about arms exports, constraining the near-term upside for the Japan aerospace and defense market.

Advanced Manufacturing Talent Shortages and Supply Chain Bottlenecks

The average age of engineers at leading primes approaches 50, while universities graduate fewer aerospace majors each year.^{[3]“Defense Industry IP Licensing Challenges,” Nikkei Asia, asia.nikkei.com} Semiconductor availability remains tight, delaying avionics integration, and rare-earth magnet supply chains remain vulnerable to geopolitical shocks. These constraints heighten program risk and temper potential growth.

Segment Analysis

By Sector: Defense Anchors Revenue, Aerospace Accelerates

Defense secured 63.85% of 2025 revenue, reflecting sustained Type 12 missile, F-35, and frigate procurement, while aerospace is projected to grow at a 5.64% CAGR through 2031. The Japan aerospace and defense market relies on defense for scale but turns to commercial aviation for momentum. Japan Airlines and ANA Holdings added 154 wide bodies in 2024-2025, pushing engine and landing gear suppliers to full capacity. Meanwhile, the GCAP fighter injects high-tech workshare, and unmanned systems gain budget priority for island defense.

Commercial recovery also draws global maintenance traffic to domestic hangars, reinforcing service revenue. The government’s mandate that 60% of defense contract value flow to local suppliers nurtures small electronics and composite firms; however, the cap on export volumes restrains aggregate sector growth. Continued liberalization and timely technology transfers will determine whether aerospace achieves parity with defense in the Japan aerospace and defense market by the early 2030s.

By Platform: Aerial Dominance Drives Dual-Use Growth

Aerial platforms generated 34.67% of 2025 revenue and are expected to rise at a 5.43% CAGR, positioning them at the center of future expansion. Fixed-wing programs encompass commercial narrowbody aircraft, F-35 fighters, and P-1 patrol aircraft. Rotary-wing production remains modest but steady, while unmanned aerial systems receive record allocations worth JPY 50 billion (USD 320 million) in FY 2025. The Japan aerospace and defense market size for aerial unmanned assets is projected to widen once GCAP avionics and autonomy modules mature.

Terrestrial systems emphasize 8×8 wheeled vehicles and 155mm howitzers optimized for island maneuvering, whereas naval platforms target frigates and submarines fitted with lithium-ion batteries for extended, silent patrols. All three domains converge on sensor fusion, EW, and secure data links, prompting cross-domain component commonality that lowers sustainment cost and strengthens the Japan aerospace and defense market.

By Service Type: MRO Surge Outpaces Manufacturing

Manufacturing accounted for 76.43% of 2025 service revenue; however, MRO is expected to outstrip it at a 7.31% CAGR as the fleet expands and ages. Carriers are adopting digital twins to predict part fatigue, and a bilateral sustainment plan could add US Navy destroyer work worth up to USD 1 billion annually by 2028. The Japan aerospace and defense market share for MRO is set to climb as new hangars open in Nagoya and Kobe.

Manufacturing still enjoys a robust backlog, led by F-35 final assembly, Mogami-class frigates, and Type 12 missiles; however, small batch sizes elevate unit costs. GCAP exports, if realized, could deliver the scale required for competitive pricing and keep assembly lines running past 2035. In the interim, service revenue narrows the gap and diversifies cash flow across the Japan aerospace and defense market.

By Component: Electronic Warfare Ascends as Airframes Mature

Airframes and structures accounted for 24.78% of 2025 revenue, while electronic warfare and sensors are expected to carry the highest growth outlook at a 6.34% CAGR. Mitsubishi Electric exported its FPS-3ME AESA radar to the Philippines in March 2024, marking Japan’s first radar export under the eased transfer rules. Northrop Grumman and Mitsubishi Electric signed a July 2024 pact to co-develop EW suites and unmanned underwater vehicles (UUVs), pairing US algorithm expertise with Japanese manufacturing precision.

Propulsion work progresses on IHI’s XF9-1 engine, which achieved thrust-to-weight ratios above 15:1 in bench tests.^{[4]“IHI XF9 Engine Technology,” IHI Corporation, ihi.co.jp} Composite supplier Toray received a supplier award in April 2024 for its T1100G carbon fiber, which enables 15-20% weight savings in the airframe. This component mix positions Japan to capture value from advanced materials, even as traditional airframe demand plateaus, thereby expanding the high-tech tier of the Japan aerospace and defense market.

Geography Analysis

Japan’s island geography and proximity to China and North Korea shape procurement priorities, sustaining a 5.12% CAGR through 2031. The southwestern Nansei Islands strategy funds mobile missile batteries, Li-ion submarines, and unmanned surveillance assets to deter amphibious threats. The Type 16 Maneuver Combat Vehicle airlifts aboard C-2 transports, and stand-off Type 12 missiles reach 1,000 kilometers, extending deterrent coverage. Space-based intelligence increases responsiveness, while Link 16 upgrades ensure data continuity across services, reinforcing growth in the Japan aerospace and defense market.

Inbound tourism exceeded 30 million visitors in 2024, propelling commercial fleet expansion and straining engine-overhaul facilities. Predictive-maintenance collaborations between airlines and primes aim to reduce aircraft-on-ground events, expand domestic service networks, and generate jobs in Nagoya and Tokyo. Interest from the US Navy in stationing a destroyer maintenance facility in Japanese shipyards would increase industrial demand, contingent upon liability agreements and security clearances. These developments expand regional MRO clusters within the Japan aerospace and defense market.

Policy remains a critical variable. Export-control revisions unlock potential GCAP exports but require unanimous approval from partners, limiting near-term upside. The Economic Security Promotion Act raises compliance overhead for small suppliers, consolidating the vendor base and pushing procurement toward accredited mid-tier firms. Balancing autonomy and alliance needs defines the trajectory for future platform integration and shapes regional demand inside the Japan aerospace and defense market.