What Is the Defense Industrial Base? Definition & 2025 Spending Scale
The defense industrial base is the network of firms, facilities, and supply chains that equip a country's military, sized here by the $2,740.0bn in global military spending it drew on in 2025.
Key takeaways
- The defense industrial base is the network of firms and infrastructure that supplies a country's military; global military spending it supports reached $2,740.0bn in 2025.
- This $2,740.0bn figure is our calculation summing SIPRI country-level data across 149 countries, not a total SIPRI publishes itself.
- The total is a floor, not a complete count: some spenders, including North Korea, are absent from the SIPRI dataset and several other states have gaps.
- The defense industrial base includes prime contractors, subcontractors, government-owned facilities, R&D infrastructure, and maintenance networks.
- It differs from 'military-industrial complex' (a political framing) and 'defense sector' (a market classification).
Verdict
The defense industrial base is the industrial ecosystem behind military equipment, and its scale in 2025 is best anchored by the $2,740.0bn in global military spending our calculation derives from SIPRI's country-level data across 149 countries. That figure is a floor: coverage gaps, including the absence of North Korea from the dataset, mean true global spending is somewhat higher.
At a glance
| Year | 2025Actuals, not projections |
|---|---|
| World total military expenditure | $2,740.0bnOur calculation from SIPRI country data |
| Countries included | 149Countries with a reported SIPRI series |
| Currency basis | Constant 2024 US dollarsStrips out inflation and exchange-rate effects |
The defense industrial base is the network of companies, facilities, and supply chains that design, build, and maintain a country's military equipment. Its scale is best grasped through spending: countries directed a combined $2,740.0bn to military budgets in 2025, our calculation from SIPRI country-level data covering 149 countries (data as of 2026-08-23).
01 What Is the Defense Industrial Base? A Working Definition
The defense industrial base (DIB) refers to the industrial capacity — public and private — that a nation relies on to research, develop, produce, and sustain weapons systems, equipment, and supplies for its armed forces. It is not a single company or agency; it is an ecosystem: prime contractors that assemble aircraft, ships, and vehicles, the layers of subcontractors that supply components and raw materials, government arsenals and shipyards, and the logistics and maintenance networks that keep fielded equipment operational.
Every country with an armed force draws on some version of a defense industrial base, whether it manufactures most of its own equipment or depends heavily on imports. Military expenditure — the money governments spend on personnel, procurement, operations, and research — is the demand signal that sustains this base. The $2,740.0bn spent globally in 2025 is what gives the term concrete scale.
02 Core Components: Manufacturers, Suppliers, and Infrastructure
- Prime contractors — large firms that design and assemble complete weapons platforms such as aircraft, warships, and armored vehicles.
- Subcontractors and suppliers — companies providing components, electronics, materials, and specialized parts that primes depend on.
- Government-owned facilities — arsenals, shipyards, and depots operated directly by the state rather than private industry.
- Research and development infrastructure — laboratories and testing facilities that advance new military technology.
- Maintenance, repair, and overhaul (MRO) networks — the facilities and personnel that keep existing equipment functional over its service life.
Government military expenditure funds each of these layers, whether through direct procurement contracts, R&D grants, or operating budgets for state-run facilities.
03 Sizing the Global Defense Industrial Base: $2,740.0bn in 2025
SIPRI tracks military expenditure for individual countries in constant 2024 US dollars. Summing the 2025 figures for every country SIPRI reports produces a world total of $2,740.0bn across 149 countries — our calculation from SIPRI country-level data, not a total SIPRI itself publishes.
This figure is the demand side of the defense industrial base: it is the aggregate budget that flows to defense manufacturers, suppliers, and government facilities worldwide in a single year. Because it is built from individual country series rather than a single published aggregate, it can also be broken down below the world level — by country, or grouped into regions — using the same underlying SIPRI data. For the country-by-country breakdown behind this total, see the 2025 world rankings.
04 How Coverage Gaps Affect the Total
Because the $2,740.0bn figure is a sum of the 149 countries SIPRI reports for 2025, it excludes any spender missing from the dataset. That makes it a floor on global military expenditure, not a complete count.
Some spenders are absent from the dataset — North Korea has no reported series, and several other states have gaps in their records. The true global total, including these omitted countries, is higher than $2,740.0bn.
05 Defense Industrial Base vs. Related Terms
The term is often used alongside — and sometimes confused with — related phrases:
- Military-industrial complex — a broader, more political term describing the interlocking interests of the armed forces, defense industry, and government policymakers, often used critically to describe institutional influence over spending decisions.
- Defense sector — a market or economic classification for companies that produce military goods and services, typically used in financial and industry analysis rather than policy or logistics contexts.
- Defense industrial base — the narrower, operational term used by defense planners to describe the actual physical and industrial capacity needed to equip and sustain armed forces, which the $2,740.0bn in 2025 spending helps fund.
06 Where to See the Country-Level Breakdown
The world total is built from individual country figures, each reflecting a distinct national defense industrial base of varying size and self-sufficiency. The full ranked list of the 149 countries behind the $2,740.0bn total is available in the 2025 world rankings; broader definitions of related terms are collected in the glossary.
All figures are in SIPRI constant 2024 US dollars, which strip out inflation and exchange-rate effects so spending is comparable across countries and years.
Frequently Asked Questions
- What is the defense industrial base?
- It is the network of companies, government facilities, and infrastructure that designs, produces, and maintains a country's military equipment — including prime contractors, subcontractors, arsenals, R&D labs, and maintenance networks.
- How large is the global defense industrial base in dollar terms?
- Global military expenditure, the demand that sustains the defense industrial base, totaled $2,740.0bn in 2025 across 149 countries — our calculation from SIPRI country-level data.
- Is the $2,740.0bn figure published by SIPRI?
- No. It is our calculation from summing SIPRI's individual country data for 2025; SIPRI does not publish this world total itself.
- Does the total include every country's military spending?
- No. It covers the 149 countries SIPRI reports for 2025. Some spenders, such as North Korea, have no reported series, and several other states have data gaps, so $2,740.0bn is a floor, not the full global figure.
defensebudget.org
Defense spending data, sourced from SIPRI
defensebudget.org tracks military expenditure for 160 countries using the SIPRI Military Expenditure Database. Pages are generated from that dataset and reviewed before publication.