The following is a list of the Top 100 U.S. Department of Defense prime contractors in fiscal year 2021 ranked by total contract funds awarded. The DoD had defense contract award obligations of $395.52 billion in FY21, down 8.4 percent from $431.75 billion in FY20. The top 100 contractors accounted for $245.76 billion (62 percent) of the obligated dollars, compared to $273.72 billion (63 percent) in FY20.
In FY21, the DoD’s share of available funding was $1.51 trillion, or 12.4 percent, of the FY21 U.S. federal budget . This is an increase of 18 percent compared to the DoD’s share of the U.S. federal budget for FY20 of $1.28 trillion, or 11.2 percent.
Data was sourced from USASpending.gov and compiled and processed by Forecast International. Please note: The awards listed below are from the DoD only; hence, totals will not match federal contract totals, which include awards by other government agencies. A top 100 federal listing was released in early August on SAM.gov.
| # | PRIME CONTRACTOR | $ millions | % of total |
| 1 | Lockheed Martin Corp | $39,971 | 10.3% |
| 2 | The Boeing Co | $22,207 | 5.7% |
| 3 | Raytheon Technologies Corp | $20,043 | 5.2% |
| 4 | General Dynamics Corp | $16,990 | 4.4% |
| 5 | Pfizer Inc | $13,318 | 3.4% |
| 6 | Northrop Grumman Corp | $12,557 | 3.2% |
| 7 | Humana Inc | $7,145 | 1.8% |
| 8 | Modernatx Inc | $6,921 | 1.8% |
| 9 | L3Harris Technologies Inc | $6,647 | 1.7% |
| 10 | Huntington Ingalls Industries Inc | $5,893 | 1.5% |
| 11 | Regeneron Pharmaceuticals Inc | $5,565 | 1.4% |
| 12 | BAE Systems plc | $4,907 | 1.3% |
| 13 | Leidos Holdings Inc | $3,380 | 0.9% |
| 14 | General Electric Company | $2,980 | 0.8% |
| 15 | McKesson Corp | $2,970 | 0.8% |
| 16 | Atlantic Diving Supply Inc | $2,774 | 0.7% |
| 17 | Bell-Boeing Joint Project Office | $2,470 | 0.6% |
| 18 | Science Applications International Corp | $2,366 | 0.6% |
| 19 | Health Net Federal Services LLC | $2,310 | 0.6% |
| 20 | Booz Allen Hamilton Holding Corp | $2,229 | 0.6% |
| 21 | Oshkosh Corp | $2,188 | 0.6% |
| 22 | General Atomics | $2,127 | 0.5% |
| 23 | AmerisourceBergen Corp | $2,026 | 0.5% |
| 24 | Bechtel Plant Machinery Inc | $2,000 | 0.5% |
| 25 | Eli Lilly and Company | $1,914 | 0.5% |
| 26 | CACI International Inc | $1,816 | 0.5% |
| 27 | Vectrus Systems Corp | $1,420 | 0.4% |
| 28 | Amentum Services Inc | $1,363 | 0.4% |
| 29 | Dyncorp International LLC | $1,277 | 0.3% |
| 30 | Kellogg Brown & Root Services Inc | $1,241 | 0.3% |
| 31 | Sierra Nevada Corp | $1,219 | 0.3% |
| 32 | Merck & Co Inc | $1,208 | 0.3% |
| 33 | Johns Hopkins University | $1,189 | 0.3% |
| 34 | Massachusetts Institute of Technology | $1,151 | 0.3% |
| 35 | Ministry of Defense (Japan) | $1,130 | 0.3% |
| 36 | Fluor Corp | $1,123 | 0.3% |
| 37 | Jacobs Engineering Group Inc | $1,112 | 0.3% |
| 38 | United States Dept. of Energy | $1,071 | 0.3% |
| 39 | Rolls-Royce Corp | $1,065 | 0.3% |
| 40 | The Aerospace Corp | $1,035 | 0.3% |
| 41 | KBR Inc | $978 | 0.3% |
| 42 | The Mitre Corp | $969 | 0.3% |
| 43 | Leonardo SpA | $968 | 0.3% |
| 44 | Abbott Laboratories | $931 | 0.2% |
| 45 | Centene Corp | $908 | 0.2% |
| 46 | Perspecta Inc | $868 | 0.2% |
| 47 | M1 Support Services LP | $866 | 0.2% |
| 48 | Hensel Phelps Construction Co | $854 | 0.2% |
| 49 | Abbott Rapid Dx North America LLC | $843 | 0.2% |
| 50 | Walsh – Turner JV II | $840 | 0.2% |
| 51 | Honeywell International Inc | $839 | 0.2% |
| 52 | Express Scripts Inc | $743 | 0.2% |
| 53 | Core Tech-HDCC-Kajima LLC | $730 | 0.2% |
| 54 | Textron Inc | $729 | 0.2% |
| 55 | Alion Science and Technology Corp | $684 | 0.2% |
| 56 | Dell Federal Systems LP | $662 | 0.2% |
| 57 | FedEx Corp | $659 | 0.2% |
| 58 | The Parsons Corp | $650 | 0.2% |
| 59 | United Launch Alliance LLC | $633 | 0.2% |
| 60 | Government of Canada | $626 | 0.2% |
| 61 | Georgia Tech Research Corp | $604 | 0.2% |
| 62 | BP Products North America Inc | $592 | 0.2% |
| 63 | Patriot Team | $582 | 0.2% |
| 64 | Space Exploration Technologies Corp (SpaceX) | $564 | 0.1% |
| 65 | Marinette Marine Corp | $562 | 0.1% |
| 66 | Carahsoft Technology Corp | $551 | 0.1% |
| 67 | Cardinal Health Inc | $539 | 0.1% |
| 68 | Great Lakes Dredge & Dock Corp | $511 | 0.1% |
| 69 | AstraZeneca plc | $502 | 0.1% |
| 70 | Fluor Marine Propulsion LLC | $486 | 0.1% |
| 71 | International Business Machines Corp | $485 | 0.1% |
| 72 | Torch Technologies Inc | $467 | 0.1% |
| 73 | The Whiting-Turner Contracting Co | $464 | 0.1% |
| 74 | AECOM | $458 | 0.1% |
| 75 | Johns Hopkins Health System Corp | $448 | 0.1% |
| 76 | Highmark Inc | $437 | 0.1% |
| 77 | Okinawa Idemitsu K.K. | $430 | 0.1% |
| 78 | Serco Group plc | $430 | 0.1% |
| 79 | W.S. Darley & Co | $428 | 0.1% |
| 80 | The Charles Stark Draper Laboratory Inc | $426 | 0.1% |
| 81 | World Wide Technology Holding Co Inc | $425 | 0.1% |
| 82 | Petromax Refining Co | $425 | 0.1% |
| 83 | Viasat Inc | $408 | 0.1% |
| 84 | Mantech International Corp | $402 | 0.1% |
| 85 | Tesoro Refining & Marketing Company | $394 | 0.1% |
| 86 | Martin’s Point Health Care Inc | $392 | 0.1% |
| 87 | Nova Global Supply and Services LLC | $384 | 0.1% |
| 88 | DCS Corp | $379 | 0.1% |
| 89 | US Foods Inc | $375 | 0.1% |
| 90 | Bechtel Parsons Blue Grass | $373 | 0.1% |
| 91 | The Walsh Group Ltd | $370 | 0.1% |
| 92 | Alberici-Mortenson Joint Venture | $370 | 0.1% |
| 93 | Misc. Foreign Contractors | $362 | 0.1% |
| 94 | RQ Construction LLC | $357 | 0.1% |
| 95 | S-Oil Corp | $356 | 0.1% |
| 96 | TCOM Limited Partnership | $348 | 0.1% |
| 97 | Bechtel National Inc | $345 | 0.1% |
| 98 | Federal Resources Supply Co | $345 | 0.1% |
| 99 | Deloitte LLP | $342 | 0.1% |
| 100 | Microsoft Corp | $339 | 0.1% |
