Who Are the Top 10 Government Contractors? Definitive Ranked List (2026)
The top 10 government contractors by total federal contract obligations across all agencies, what they do, and what smaller contractors can learn from them.
The Short Answer
The top 10 government contractors by total federal contract obligations are dominated by defense and IT firms, led by Lockheed Martin at over $80 billion. But this list includes all federal agencies -- not just DOD -- meaning companies with strong civilian agency portfolios like Leidos, SAIC, and Booz Allen rank higher than their DOD-only numbers suggest. Here is the definitive ranking based on FY2025 FPDS data.
Top 10 Government Contractors Ranked (FY2025)
| Rank | Company | Total Federal Obligations | Primary Agencies | DOD % of Portfolio |
|---|---|---|---|---|
| 1 | Lockheed Martin | $80.5B | DOD, NASA, DOE | 93% |
| 2 | RTX (Raytheon) | $41.2B | DOD, FAA, DHS | 93% |
| 3 | Boeing | $31.4B | DOD, NASA, FAA | 91% |
| 4 | Northrop Grumman | $28.3B | DOD, Intelligence, DOE | 92% |
| 5 | General Dynamics | $27.6B | DOD, DHS, civilian IT | 90% |
| 6 | BAE Systems | $15.1B | DOD, Intelligence | 95% |
| 7 | L3Harris Technologies | $14.2B | DOD, Intelligence, NASA | 91% |
| 8 | Huntington Ingalls | $11.8B | DOD (Navy) | 95% |
| 9 | Leidos | $11.4B | DOD, VA, DHS, NASA, NIH | 76% |
| 10 | Booz Allen Hamilton | $9.3B | DOD, Intelligence, HHS, IRS | 52% |
*Figures approximate based on public FPDS data and annual reports. Monitor current obligations at Fed-Spend.*
What Changed Year Over Year
The top 10 is remarkably stable -- the same companies have held these positions for a decade -- but notable shifts in FY2025 include:
The Next 10: Emerging Contractors to Watch
| Rank | Company | Total Obligations | Trend |
|---|---|---|---|
| 11 | SAIC | $8.8B | Slight decline |
| 12 | CACI International | $7.1B | Growing |
| 13 | Amentum | $5.9B | Rapid growth post-merger |
| 14 | KBR | $5.4B | Stable |
| 15 | Maximus | $5.1B | Growing (civilian agencies) |
| 16 | Textron | $4.2B | Stable |
| 17 | General Atomics | $3.8B | Growing (autonomous) |
| 18 | Palantir | $3.5B | Rapid growth |
| 19 | Anduril | $2.9B | Fastest growth rate |
| 20 | Accenture Federal | $2.7B | Growing (IT modernization) |
The most significant trend is venture-backed defense technology firms moving up. Palantir, Anduril, Shield AI, and others represent a new class of contractor that did not exist a decade ago. They are winning competitive awards on technical merit against established primes, particularly in AI, autonomous systems, and software-defined capabilities.
How These Companies Won Their Positions
1. Decades of Incumbent Advantage
The single biggest factor is time. Most top-10 contractors have held major programs for 20+ years. Contract vehicles get recompeted, but incumbents win recompetes at rates above 80% in defense and 70% in civilian agencies. Once you hold a large program, keeping it is far easier than winning it.
2. Sole-Source and Proprietary Lock-In
Companies like Lockheed Martin (F-35), Huntington Ingalls (nuclear carriers), and General Dynamics (Columbia-class submarines) hold contracts where they are the only qualified manufacturer. These programs run for decades and guarantee baseline revenue.
3. Acquisitions to Fill Gaps
Every top-10 contractor has grown through acquisition:
Acquisitions buy past performance, clearances, and incumbent positions that take years to develop organically.
4. Multi-Agency Diversification
The most resilient top-10 contractors serve multiple agencies. Leidos and Booz Allen are prime examples -- if DOD budgets tighten, they have revenue from VA, HHS, Intelligence, DHS, and civilian modernization programs. Pure-play defense companies like Huntington Ingalls are more exposed to Navy budget shifts.
What Smaller Contractors Can Learn From the Primes
Build Incumbent Positions
The primes did not start at $80 billion. They won small contracts, performed well, expanded scope, and leveraged past performance into larger wins. The pattern is repeatable at any scale.
Pursue Recompetes Strategically
Primes staff dedicated recompete teams 18 months before contract end dates. Smaller contractors rarely do this, creating an asymmetric disadvantage. Using Fed-Spend's recompete tracking to identify expiring contracts early gives you the same visibility the primes have built into their business development processes.
Subcontract Before You Prime
Every top-10 company subcontracts billions annually. Subcontracting builds past performance, agency relationships, and clearance access without the overhead of managing a full prime contract. It is the lowest-risk path to prime contracting at the federal level.
Specialize Before You Diversify
Primes are generalists now, but each started as a specialist. Lockheed was an aircraft company. General Dynamics was a submarine builder. Leidos was a science and engineering firm. Build deep expertise in one domain, win contracts there, then expand.
Finding Subcontracting Opportunities With the Top 10
| Database | What It Contains |
|---|---|
| SBA Subcontracting Network (SubNet) | Subcontracting opportunities posted by primes |
| DOD Subcontracting Directory | Small business liaison contacts at every DOD prime |
| SAM.gov Entity Search | Look up primes to find their subcontracting plans |
| Fed-Spend Incumbent Tracker | Identify which primes hold expiring contracts and may need sub support |
FAQ
Who is the number 1 government contractor?
Lockheed Martin is the number 1 government contractor by total federal contract obligations, receiving approximately $80.5 billion in FY2025. The vast majority comes from DOD, driven by the F-35 Joint Strike Fighter program, missile defense systems, space vehicles, and classified programs. Lockheed Martin has held the top position for over two decades.
Are the top government contractors all defense companies?
Mostly, but not entirely. Eight of the top 10 derive over 90% of their federal revenue from DOD and intelligence agencies. Leidos (76% DOD) and Booz Allen Hamilton (52% DOD) have significant civilian portfolios. Outside the top 10, companies like Maximus, Accenture Federal, and Deloitte derive most of their federal revenue from civilian agencies like HHS, VA, IRS, and CMS.
How can a small business compete with these companies?
Small businesses compete by targeting set-aside contracts where primes cannot bid, pursuing SBIR/STTR R&D funding, subcontracting with primes (who must meet small business subcontracting goals), and focusing on niche technical areas where they hold genuine expertise. The federal government awards over $150 billion annually to small businesses. The strategy is not to compete head-to-head with Lockheed Martin, but to build in spaces where size is an advantage -- speed, specialization, and agility.
Related Guides
More from the Federal Spending Trends FY2026 series