The 100 Largest Government Contractors

Updated Oct 19, 2026

In the 12 months to Oct 19, 2026, federal agencies obligated $748.2 billion in contracts. The largest government contractor was Lockheed Martin Corp with $48.9 billion, followed by RTX Corporation ($33.1 billion) and The Boeing Company ($28.3 billion). The 10 largest took 28% of all contract dollars, the 100 largest 59%, and small businesses 21%.

Top 100 federal contractors, last 12 months

1. Lockheed Martin Corp $48.9 billion · 6.5%
2. RTX Corporation $33.1 billion · 4.4%
3. The Boeing Company $28.3 billion · 3.8%
4. Unitedhealth Group Incorporated $22.5 billion · 3.0%
5. Triwest Healthcare Alliance Corp $17.2 billion · 2.3%
6. Fisher Sand & Gravel Co $13.4 billion · 1.8%
7. Northrop Grumman Corporation $13.1 billion · 1.7%
8. General Dynamics Corp $12.2 billion · 1.6%
9. Mckesson Corporation $9.7 billion · 1.3%
10. Huntington Ingalls Industries, Inc $9.5 billion · 1.3%
11. Leidos Holdings, Inc. $8.7 billion · 1.2%
12. Fluor Corporation $7.7 billion · 1.0%
13. Electric Boat Corporation $7.6 billion · 1.0%
14. Amentum Holdings Inc. $6.8 billion · 0.9%
15. L3HARRIS Technologies, Inc $6.7 billion · 0.9%
16. Booz Allen Hamilton Holding Corporation $6.7 billion · 0.9%
17. Barnard Construction Company, Incorporated $6.1 billion · 0.8%
18. BAE Systems PLC $5.3 billion · 0.7%
19. PIP Manufacturing, Inc. $5.1 billion · 0.7%
20. Humana Government Business Inc $5.1 billion · 0.7%
21. Atlantic Diving Supply, Inc. $4.9 billion · 0.7%
22. General Dynamics Corp $4.8 billion · 0.6%
23. Cencora, Inc. $4.5 billion · 0.6%
24. Triad National Security LLC $4.5 billion · 0.6%
25. Science Applications International Corporation $4.3 billion · 0.6%
26. CACI International Inc $4.2 billion · 0.6%
27. Deloitte Consulting LLP $3.9 billion · 0.5%
28. Lawrence Livermore National Security, LLC $3.6 billion · 0.5%
29. Accenture PLC $3.6 billion · 0.5%
30. Space Exploration Technologies Corp. $3.6 billion · 0.5%
31. Davie Defense Inc. $3.5 billion · 0.5%
32. Consolidated Nuclear Security, LLC $3.3 billion · 0.4%
33. Francisco Partners Management, L.P. $3.3 billion · 0.4%
34. Tote Services, LLC $3.0 billion · 0.4%
35. Ut-Battelle LLC $3.0 billion · 0.4%
36. Southwest Valley Constructors Co $2.8 billion · 0.4%
37. Veritas Capital Fund Management, L.L.C. $2.8 billion · 0.4%
38. Battelle Memorial Institute $2.8 billion · 0.4%
39. Mckesson Corporation $2.6 billion · 0.4%
40. Optum Public Sector Solutions, Inc. $2.6 billion · 0.3%
41. Textron Inc $2.5 billion · 0.3%
42. Honeywell International Inc. $2.5 billion · 0.3%
43. Bechtel Group, Inc. $2.4 billion · 0.3%
44. SLS Federal Services LLC $2.4 billion · 0.3%
45. Spencer Construction LLC $2.4 billion · 0.3%
46. Bollinger Shipyards Lockport, L.L.C. $2.3 billion · 0.3%
47. General Atomics Aeronautical Systems, Inc. $2.3 billion · 0.3%
48. Merck & Co., Inc. $2.3 billion · 0.3%
49. Carahsoft Technology Corp $2.2 billion · 0.3%
50. The Johns Hopkins University Applied Physics Laboratory LLC $2.2 billion · 0.3%
51. California Institute Of Technology $2.2 billion · 0.3%
52. Oracle Corp $2.1 billion · 0.3%
53. Sierra Nevada Company, LLC $2.1 billion · 0.3%
54. Reliance, Inc. $2.0 billion · 0.3%
55. Amentum Joint Venture LP $2.0 billion · 0.3%
56. Palantir Technologies Inc. $2.0 billion · 0.3%
57. Tully Construction Co - Thalle Construction Co LLC $1.9 billion · 0.3%
58. Loyal Source Government Services LLC $1.9 billion · 0.3%
59. General Dynamics Land Systems Inc. $1.8 billion · 0.2%
60. National Steel And Shipbuilding Company $1.8 billion · 0.2%
61. Leidos, Inc. $1.8 billion · 0.2%
62. W S Darley & Co $1.7 billion · 0.2%
63. Veterans Evaluation Services, Inc $1.7 billion · 0.2%
64. V2X Aerospace LLC $1.7 billion · 0.2%
65. Battelle Memorial Institute $1.6 billion · 0.2%
66. Cencora Global Consulting Services US Corp $1.6 billion · 0.2%
67. Pantexas Deterrence, LLC $1.6 billion · 0.2%
68. Arctic Slope Regional Corporation $1.5 billion · 0.2%
69. At&T Inc $1.5 billion · 0.2%
70. The GEO Group, Inc. $1.5 billion · 0.2%
71. General Electric Company $1.4 billion · 0.2%
72. Bell Boeing Joint Project Office $1.4 billion · 0.2%
73. Mantech International Corporation $1.3 billion · 0.2%
74. KBR Wyle Services, LLC $1.3 billion · 0.2%
75. The Regents Of The University Of California $1.3 billion · 0.2%
76. Stonex Financial Ltd $1.3 billion · 0.2%
77. The Mitre Corporation $1.3 billion · 0.2%
78. Thundercat Technology LLC $1.3 billion · 0.2%
79. CSI Aviation, Inc $1.3 billion · 0.2%
80. The Timken Company $1.3 billion · 0.2%
81. V2X, Inc. $1.2 billion · 0.2%
82. Rolls-Royce Holdings PLC $1.2 billion · 0.2%
83. Clark Construction LLC $1.2 billion · 0.2%
84. Bechtel Group, Inc. $1.2 billion · 0.2%
85. Kongsberg Defence & Aerospace AS $1.1 billion · 0.2%
86. International Business Machines Corporation $1.1 billion · 0.2%
87. Dynetics, Inc. $1.1 billion · 0.2%
88. Massachusetts Institute Of Technology $1.1 billion · 0.2%
89. Rauma Marine Constructions OY $1.1 billion · 0.2%
90. Lockheed Martin Corporation $1.1 billion · 0.1%
91. The Aerospace Corporation $1.1 billion · 0.1%
92. Savannah River Mission Completion, LLC $1.1 billion · 0.1%
93. Salient Crgt, Inc. $1.1 billion · 0.1%
94. Minburn Technology Group, LLC $1.1 billion · 0.1%
95. BL Harbert International LLC $1.1 billion · 0.1%
96. Ferrovial Construccion PR, LLC $1.1 billion · 0.1%
97. Hensel Phelps Construction Co $1.1 billion · 0.1%
98. Parsons Corporation $1.1 billion · 0.1%
99. Pfizer Inc $1.1 billion · 0.1%
100. Blue Origin, LLC $1.1 billion · 0.1%

Contract dollars obligated (award types A to D: definitive contracts, purchase orders, delivery and task orders, BPA calls), by parent company where USAspending.gov links one. Company names are public award records.

Free data: download this table (CSV). Licensed CC BY 4.0: reuse it freely with a link to this page.

The biggest winner at each agency

• Navy: Electric Boat Corporation $12.9 billion of $129.6 billion
• VA: Optum Public Sector Solutions, Inc. $22.5 billion of $84.2 billion
• Army: Lockheed Martin Corporation $13.4 billion of $83.1 billion
• Air Force: The Boeing Company $5.7 billion of $83.0 billion
• DHS: Fisher Sand & Gravel Co $13.4 billion of $73.1 billion
• DOE: Triad National Security, LLC $5.4 billion of $54.5 billion
• DLA: Amerisourcebergen Drug Corp $6.2 billion of $46.2 billion
• GSA: Booz Allen Hamilton Inc $2.7 billion of $28.7 billion
• NASA: California Institute Of Technology $2.2 billion of $16.3 billion
• Coast Guard: Davie Defense Inc. $3.5 billion of $13.4 billion
• USDA: Kiewit Infrastructure South Co $260.6 million of $10.8 billion
• FAA: Harris Corporation $1.2 billion of $9.9 billion
• State Department: Caddell Construction Co. (DE), LLC $561.6 million of $9.7 billion
• ICE: CSI Aviation, Inc $1.3 billion of $8.9 billion
• NIH: Leidos Biomedical Research Inc $779.4 million of $5.8 billion
• Forest Service: Kiewit Infrastructure South Co $260.6 million of $4.3 billion
• Bureau of Prisons: Naphcare LLC $214.0 million of $2.9 billion
• TSA: Leidos, Inc. $430.2 million of $2.5 billion
• NOAA: Peraton Inc. $144.5 million of $2.5 billion
• National Park Service: Record Steel And Construction, Inc. $129.8 million of $1.7 billion
• EPA: Kemron/Arrowhead JV, LLC $71.1 million of $1.3 billion
• DARPA: Lockheed Martin Corporation $246.2 million of $1.2 billion
• FEMA: Compass PTS JV, The $42.9 million of $1.1 billion

Which agencies spend the most on contracts

1. Department of Defense $388.2 billion · 52%
2. Department of Veterans Affairs $84.2 billion · 11%
3. Department of Homeland Security $73.1 billion · 10%
4. Department of Energy $54.5 billion · 7%
5. General Services Administration $28.7 billion · 4%
6. Department of Health and Human Services $24.8 billion · 3%
7. National Aeronautics and Space Administration $16.3 billion · 2%
8. Department of Transportation $14.1 billion · 2%
9. Department of Agriculture $10.8 billion · 1%
10. Department of Justice $10.2 billion · 1%
11. Department of State $9.7 billion · 1%
12. Department of the Treasury $6.9 billion · 1%
13. Department of the Interior $6.8 billion · 1%
14. Department of Commerce $5.0 billion · 1%
15. Department of Education $2.8 billion · 0%

What the money buys

1. Commercial and Institutional Building Construction $53.1 billion
2. Direct Health and Medical Insurance Carriers $48.3 billion
3. Aircraft Manufacturing $47.5 billion
4. Engineering Services $44.3 billion
5. Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) $43.5 billion
6. Guided Missile and Space Vehicle Manufacturing $36.9 billion
7. Facilities Support Services $36.8 billion
8. Ship Building and Repairing $34.4 billion
9. Computer Systems Design Services $31.0 billion
10. Other Computer Related Services $24.3 billion

What this means for a small contractor

The largest contractors win most of the dollars through a small number of very large awards, but most federal notices are small: purchase orders and service contracts in the tens or hundreds of thousands. Small businesses won $157.7 billion in the same 12 months. Many of the open notices are set aside for them; see which agencies and trades set aside the most, and the contractor profiles for who wins in each agency.

How this list is made

From USAspending.gov's public award data, read Oct 19, 2026: contract obligations in the last 12 months, grouped by parent company where one is linked (so Lockheed Martin's divisions count as one company), otherwise by the company that won. Obligations are the money committed in that period, including changes to older contracts, so a company can rank high for an award made years ago. Updated every week.

Questions

Who is the largest government contractor?

Lockheed Martin Corp, with $48.9 billion in federal contract obligations in the 12 months to Oct 19, 2026, then RTX Corporation and The Boeing Company.

How much does the federal government spend on contracts?

$748.2 billion in contract obligations in the last 12 months, by USAspending.gov.

How much goes to small businesses?

$157.7 billion, about 21% of contract dollars in the same period, by USAspending.gov's business-size tags.