Updated April 2026 · FY2024 USAspending.gov data

Top Federal Contractors

Q: Where does this ranking data come from?

Every figure is sourced from USAspending.gov , the official federal spending database mandated by the DATA Act. Recipient identity is reconciled to SAM.gov Unique Entity ID registrations, so subsidiaries that file separately roll up to a single parent contractor where the federal record supports it.

The 500 largest federal contractors ranked by FY2024 obligations. Together they account for $529.6B in federal contract spending. The top 5 alone capture about 12% of the total; the top 10 capture roughly 19%. Every figure is a direct read of USAspending.gov.

What This Ranking Means

"Total obligations" is the sum of binding commitments the federal government has recorded against each contractor in the fiscal year. It is the standard unit reported on USAspending.gov and used by Congress, the GAO, and federal inspectors general. Obligations differ from outlays — the actual cash that leaves the Treasury — and from contract ceilings. A contractor can have a large multi-year ceiling but show modest obligations in any given year if only part of the work has been authorized.

Concentration is the dominant story this ranking tells. The Department of Defense alone accounts for roughly half of all federal contract spending, and within DOD, five prime contractors capture about 30%. The civilian side is more spread out but still concentrated: a small set of professional-services firms (Leidos, SAIC, Booz Allen Hamilton, Accenture Federal) capture an increasing share of agency spending as legacy IT systems are modernized.

For a category-level view, see spending by industry; for a state-level view, see federal spending by state; for live tracking of contract terminations, see the DOGE tracker.

Top 10 at a Glance

#	Contractor	Obligations	Contracts	Agencies
1	Optum Public Sector Solutions, Inc.	$20.1B	25	1
2	Lockheed Martin Corporation	$16.8B	50	3
3	Mckesson Corporation	$9.0B	25	3
4	The Boeing Company	$8.6B	25	2
5	Electric Boat Corporation	$8.6B	25	1
6	Triwest Healthcare Alliance Corp.	$8.4B	25	2
7	Humana Government Business Inc.	$8.0B	3	1
8	Raytheon Company	$7.8B	25	1
9	Huntington Ingalls Incorporated	$7.5B	50	2
10	Booz Allen Hamilton Inc.	$6.9B	25	6

Where the Money Goes by Sector

Defense dominates the top of the list. The Department of Defense alone obligated $281.8B across 0 awards in the most recent fiscal year, anchoring the top of every contractor ranking. Aircraft, ships, missiles, satellites, vehicles, and weapons systems all flow through the DOD prime contracts captured here.

Beyond defense, federal IT and professional services have grown into a meaningful second tier. Civilian agencies — DHS, VA, HHS, IRS, USDA — each sustain a stable of professional-services contractors handling cybersecurity, software development, cloud migration, and data analytics. Healthcare administrators (Medicare Advantage, TRICARE) make up a third tier, with Humana, Centene, and similar firms appearing in the top 25 thanks to administrative-services contracts more than direct medical care.

Full Ranking — Top 500 Federal Contractors

Rank	Contractor	Contracts	Agencies	Total Obligations
#1	Optum Public Sector Solutions, Inc.	25	1	$20.1B
#2	Lockheed Martin Corporation	50	3	$16.8B
#3	Mckesson Corporation	25	3	$9.0B
#4	The Boeing Company	25	2	$8.6B
#5	Electric Boat Corporation	25	1	$8.6B
#6	Triwest Healthcare Alliance Corp.	25	2	$8.4B
#7	Humana Government Business Inc.	3	1	$8.0B
#8	Raytheon Company	25	1	$7.8B
#9	Huntington Ingalls Incorporated	50	2	$7.5B
#10	Booz Allen Hamilton Inc.	25	6	$6.9B
#11	Amerisourcebergen Drug Corp.	25	2	$6.1B
#12	Northrop Grumman Systems Corporation	50	2	$5.6B
#13	Triad National Security, LLC	1	1	$5.2B
#14	Rtx Corporation	25	1	$5.0B
#15	National Technology & Engineering Solutions of Sandia, LLC	1	1	$5.0B
#16	Atlantic Diving Supply, Inc.	25	2	$4.8B
#17	General Dynamics Information Technology, Inc.	25	9	$4.8B
#18	Sikorsky Aircraft Corporation	25	2	$4.8B
#19	Science Applications International Corporation	50	5	$4.6B
#20	Amentum Services, Inc.	25	3	$3.8B
#21	Consolidated Nuclear Security, LLC	1	1	$3.6B
#22	Health Net Federal Services, LLC	2	1	$3.5B
#23	Fluor Marine Propulsion, LLC	2	2	$3.5B
#24	Space Exploration Technologies Corp.	25	2	$3.4B
#25	Accenture Federal Services LLC	25	10	$3.4B
#26	Deloitte Consulting Llp	25	8	$3.3B
#27	Lawrence Livermore National Security, LLC	1	1	$3.2B
#28	Leidos, Inc.	25	9	$3.0B
#29	Caci, Inc. - Federal	25	4	$2.8B
#30	General Dynamics Land Systems Inc.	25	1	$2.6B
#31	Advanced Technology International	25	2	$2.6B
#32	Ut-battelle LLC	1	1	$2.5B
#33	General Atomics Aeronautical Systems, Inc.	25	2	$2.3B
#34	Bae Systems Land & Armaments L.p.	25	1	$2.3B
#35	Okinawa Idemitsu K.k.	25	1	$2.2B
#36	Bechtel Plant Machinery, Inc.	19	1	$2.2B
#37	California Institute of Technology	25	1	$2.2B
#38	Savannah River Nuclear Solutions LLC	2	2	$2.1B
#39	Bath Iron Works Corporation	25	1	$2.1B
#40	The Johns Hopkins University Applied Physics Laboratory LLC	25	3	$2.0B
#41	Peraton Inc.	25	7	$2.0B
#42	Qtc Medical Services Inc.	25	1	$1.9B
#43	Dell Marketing L.p.	25	4	$1.9B
#44	Battelle Energy Alliance, LLC	2	2	$1.9B
#45	Honeywell Federal Manufacturing & Technologies, LLC	1	1	$1.8B
#46	Carahsoft Technology Corp.	25	9	$1.8B
#47	The Mitre Corporation	25	6	$1.7B
#48	Vectrus Systems LLC	25	2	$1.6B
#49	Clark Construction Group LLC	13	4	$1.6B
#50	Battelle Memorial Institute	25	6	$1.6B
#51	General Electric Company	25	2	$1.6B
#52	Deployed Resources LLC	25	2	$1.6B
#53	Optumserve Health Services, Inc.	25	3	$1.6B
#54	United Launch Services, LLC	25	1	$1.5B
#55	L3harris Technologies Integrated Systems L.p.	25	2	$1.5B
#56	Serco Inc.	25	5	$1.5B
#57	Chemonics International, Inc.	25	1	$1.5B
#58	Massachusetts Institute of Technology	25	3	$1.5B
#59	Dell Federal Systems L.p	25	7	$1.5B
#60	Bae Systems Technology Solutions & Services Inc.	25	4	$1.4B
#61	National Steel and Shipbuilding Company	18	1	$1.4B
#62	The Regents of the University of California	20	8	$1.4B
#63	Austal Usa, LLC	25	2	$1.4B
#64	Oshkosh Defense LLC	25	1	$1.3B
#65	The Aerospace Corporation	25	5	$1.3B
#66	Domestic Awardees (undisclosed)	25	2	$1.3B
#67	Sierra Nevada Company, LLC	25	2	$1.3B
#68	Parsons Government Services Inc.	25	5	$1.3B
#69	Kbr Services, LLC	25	1	$1.3B
#70	Noble Supply & Logistics, LLC	25	1	$1.2B
#71	Vertex Aerospace LLC	25	5	$1.2B
#72	International Business Machines Corporation	25	7	$1.2B
#73	Cgi Federal Inc.	25	12	$1.2B
#74	Raytheon/lockheed Martin Javelin Jv	21	1	$1.2B
#75	W S Darley & Co	25	1	$1.2B
#76	Bell Textron Inc.	25	1	$1.2B
#77	Mantech Advanced Systems International, Inc.	25	5	$1.2B
#78	Alliance for Energy Innovation, LLC	1	1	$1.2B
#79	Uchicago Argonne, LLC	1	1	$1.2B
#80	Peraton Enterprise Solutions LLC	25	9	$1.1B
#81	Marinette Marine Corporation	6	2	$1.1B
#82	Veterans Evaluation Services, Inc.	25	1	$1.1B
#83	Xator LLC	25	3	$1.1B
#84	Mission Support & Test Services LLC	1	1	$1.1B
#85	Hii Mission Technologies Corp.	25	2	$1.1B
#86	Bae Systems Information and Electronic Systems Integration Inc.	25	1	$1.1B
#87	Kbr Wyle Services, LLC	25	4	$1.1B
#88	Am General LLC	25	1	$1.1B
#89	L3harris Technologies, Inc.	25	4	$1.1B
#90	Maximus Federal Services, Inc.	25	7	$1.1B
#91	Valero Marketing and Supply Co	25	1	$1.1B
#92	Canadian Commercial Corporation	25	1	$1.1B
#93	Olin Winchester LLC	25	2	$1.0B
#94	L3harris Global Communications, Inc.	25	1	$1.0B
#95	Rockwell Collins, Inc.	25	1	$1.0B
#96	Bl Harbert International LLC	25	2	$1.0B
#97	Fcn, Inc.	25	7	$994.9M
#98	Caddell Construction Co. (de), LLC	25	4	$979.1M
#99	Bp Products North America Inc.	25	1	$966.7M
#100	Pantexas Deterrence, LLC	1	0	$963.0M
#101	At&t Enterprises, LLC	25	13	$940.5M
#102	Bechtel National, Inc.	5	3	$928.6M
#103	Minburn Technology Group, LLC	25	14	$927.2M
#104	Four Points Technology, L.l.c.	25	10	$912.0M
#105	M1 Support Services, L.p.	18	1	$904.3M
#106	Oracle Health Government Services, Inc.	25	1	$893.4M
#107	Savannah River Mission Completion, LLC	9	1	$885.6M
#108	Bell Boeing Joint Project Office	25	1	$871.4M
#109	Leidos Biomedical Research Inc.	25	1	$869.3M
#110	Rolls-royce Corporation	25	1	$860.3M
#111	Patriot Team	25	1	$858.8M
#112	The Charles Stark Draper Laboratory, Inc.	25	3	$812.5M
#113	Thundercat Technology, LLC	25	9	$804.3M
#114	Brookhaven Science Associates LLC	1	1	$797.2M
#115	Dragados/hawaiian Dredging/orion Jv	2	1	$790.7M
#116	Ministry of Defense	12	1	$789.9M
#117	Washington River Protection Solutions LLC	1	1	$775.1M
#118	Trumbull Corporation and Brayman Construction Corporation, a Joint Venture	3	1	$771.3M
#119	Fermi Research Alliance, LLC	1	1	$766.2M
#120	Fermi Forward Discovery Group, LLC	1	0	$756.6M
#121	Guidehouse Inc.	25	12	$747.4M
#122	General Dynamics Mission Systems, Inc.	25	3	$744.0M
#123	The Leland Stanford Junior University	25	5	$731.8M
#124	Carrington Mortgage Services LLC	2	1	$731.0M
#125	Crowley Government Services, Inc.	25	2	$728.5M
#126	Aecom Technical Services, Inc.	25	4	$718.6M
#127	Federal Express Corporation	25	3	$715.5M
#128	V3gate, LLC	25	6	$710.5M
#129	Iron Bow Technologies, LLC	25	6	$706.1M
#130	Asrc Federal Facilities Logistics, LLC	25	1	$704.1M
#131	Stonex Financial Ltd.	25	1	$702.6M
#132	Deloitte & Touche Llp	25	7	$700.7M
#133	Honeywell International Inc.	25	5	$696.4M
#134	Research Triangle Institute	25	4	$663.2M
#135	Drs Network & Imaging Systems LLC	25	1	$647.4M
#136	Anduril Industries, Inc.	25	2	$644.6M
#137	The Geo Group, Inc.	25	2	$641.6M
#138	Cardinal Health 200, LLC	25	3	$638.2M
#139	Great Lakes Dredge & Dock Co, LLC	25	1	$636.1M
#140	S-oil Corporation	25	1	$635.2M
#141	Torch Technologies Inc.	25	1	$629.5M
#142	General Dynamics Ordnance and Tactical Systems, Inc.	25	1	$623.2M
#143	Paragon Systems Inc.	25	3	$617.3M
#144	L3 Technologies, Inc.	25	1	$613.4M
#145	Miscellaneous Foreign Awardees	25	5	$603.2M
#146	Amentum Technology, Inc.	25	3	$600.5M
#147	Smartronix, LLC	25	3	$599.4M
#148	General Dynamics Ots (wilkes Barre), LLC	25	1	$595.4M
#149	United Cleanup Oak Ridge LLC	1	1	$592.3M
#150	Supplycore LLC	25	1	$591.7M
#151	Bae Systems Land and Armaments L.p.	25	1	$588.3M
#152	Brasfield & Gorrie LLC	16	4	$587.0M
#153	Ford Motor Co	25	1	$580.2M
#154	New Tech Solutions, Inc.	25	7	$565.9M
#155	Ernst & Young Llp	25	8	$560.0M
#156	Salient Crgt, Inc.	25	9	$557.1M
#157	Weston Solutions Inc.	25	3	$547.0M
#158	Defense Systems and Solutions	25	1	$546.5M
#159	Loyal Source Government Services LLC	25	6	$546.4M
#160	Caci Nss, LLC	25	5	$544.5M
#161	Blueforge Alliance	1	1	$537.9M
#162	Central Plateau Cleanup Company, LLC	8	1	$531.7M
#163	Credence Management Solutions Limited Liability Company	25	6	$530.0M
#164	Motor Oil (hellas) Corinth Refineries S.a.	25	1	$529.6M
#165	Ecc Constructors LLC	11	1	$526.6M
#166	Express Scripts Inc.	25	4	$524.5M
#167	Metro Machine Corp.	25	2	$524.2M
#168	Microsoft Corporation	25	4	$518.4M
#169	Textron Systems Corporation	50	1	$514.7M
#170	Global Military Products Inc.	22	1	$514.0M
#171	Georgia Tech Applied Research Corp.	25	1	$513.5M
#172	Amtec Corporation	18	1	$513.0M
#173	Fluor-bwxt Portsmouth LLC	1	1	$511.5M
#174	Liberty It Solutions LLC	8	2	$510.7M
#175	Harper Construction Company, Inc.	22	1	$509.8M
#176	Blue Origin Washington, LLC	6	2	$508.7M
#177	Dai Global LLC	25	1	$506.9M
#178	Metropolitan Security Services, Inc.	25	2	$503.7M
#179	Whiting-turner Contracting Company, the	25	5	$503.1M
#180	Petromax Refining Company LLC	25	1	$501.2M
#181	Hensel Phelps Construction Co.	19	4	$499.8M
#182	Idaho Environmental Coalition LLC	1	1	$497.6M
#183	Kpmg Llp	25	7	$491.8M
#184	The Johns Hopkins Medical Services Corporation	2	1	$490.1M
#185	Icf Incorporated, L.l.c.	25	8	$489.1M
#186	World Wide Technology LLC	25	3	$483.5M
#187	Ecs Federal, LLC	25	6	$480.2M
#188	Mantech Tsg-2 Joint Venture	25	1	$478.1M
#189	Triple Canopy Inc.	25	3	$477.8M
#190	Applied Research Associates, Inc.	25	3	$475.6M
#191	Bechtel Parsons Blue Grass, a Joint Venture	5	1	$460.0M
#192	Harris Corporation	25	2	$459.0M
#193	Verizon Business Network Services LLC	25	11	$458.8M
#194	Sevenson Environmental Services, Inc.	25	2	$454.2M
#195	Conti Federal Services, LLC	25	2	$449.7M
#196	Genentech Usa, Inc.	10	2	$449.6M
#197	Vigor Marine LLC	25	2	$448.4M
#198	381 Constructors	1	1	$447.4M
#199	Patriot Contract Services, LLC	25	2	$444.3M
#200	Phillips 66 Company	25	1	$442.9M
#201	Vitol Aviation Co	25	1	$437.6M
#202	Four LLC	25	9	$437.4M
#203	Kokosing Alberici Traylor, LLC	1	1	$436.8M
#204	Ram-system Gmbh	1	0	$432.3M
#205	General Dynamics-ots, Inc.	25	1	$431.0M
#206	Bae Systems Information & Electronic Systems Integration Inc.	25	1	$430.6M
#207	Oak Ridge Associated Universities, Incorporated	25	7	$428.4M
#208	Martins Point Health Care Inc.	2	1	$424.2M
#209	Scientific Research Corporation	25	2	$421.8M
#210	Manson Construction Co	25	4	$415.0M
#211	Gdc Middle East Company	1	1	$413.7M
#212	Pae Government Services, Inc.	25	2	$410.4M
#213	Atlas Air, INC.	1	0	$408.5M
#214	Nelnet Servicing LLC	9	1	$407.4M
#215	Ddb Chicago Inc.	25	1	$398.7M
#216	Emergent, LLC	25	12	$396.0M
#217	Westat, Inc.	25	5	$390.3M
#218	Odyssey Systems Consulting Group, Ltd.	25	2	$390.1M
#219	Cms Corporation	25	1	$388.4M
#220	United Concordia Companies, Inc.	11	2	$386.6M
#221	Cfm International Inc.	25	1	$385.4M
#222	Jt4 LLC	1	1	$385.2M
#223	Coins 'n Things, Inc.	25	1	$382.7M
#224	Acacia Center for Justice	9	2	$381.4M
#225	Caterpillar Inc.	25	2	$377.7M
#226	Caci Technologies, LLC	25	1	$371.8M
#227	Medline Industries, Lp	25	2	$370.4M
#228	Lmi Consulting, LLC	25	4	$370.0M
#229	Aerojet Rocketdyne of De, Inc.	5	2	$368.7M
#230	Thalle Construction Co Inc.	4	2	$366.0M
#231	Family Endeavors, Inc.	8	3	$365.1M
#232	Koenig & Bauer Banknote Solutions Sa	25	1	$364.4M
#233	Battelle Savannah River Alliance, LLC	1	1	$363.4M
#234	Weeks Marine, Inc.	25	2	$357.6M
#235	Asahi Refining Usa Inc.	25	1	$355.4M
#236	National Aerospace Solutions, LLC	1	1	$355.3M
#237	Rq Construction, LLC	25	1	$354.8M
#238	Jpats Logistics Services, LLC	20	1	$352.6M
#239	Airbus Us Space & Defense Inc.	25	4	$350.3M
#240	Csi Aviation, Inc.	19	4	$350.0M
#241	Nammo Perry Inc.	11	1	$345.9M
#242	American Ordnance LLC	25	1	$345.4M
#243	United Parcel Service Co.	25	4	$345.0M
#244	Mvm, Inc.	14	4	$344.3M
#245	Textron Aviation Inc.	25	4	$344.2M
#246	Fedex Supply Chain Distribution System, Inc.	16	2	$341.6M
#247	Viasat Inc.	25	3	$341.3M
#248	Dcs Corporation	25	1	$337.8M
#249	Seqirus Inc.	25	1	$337.2M
#250	Magellan Federal, Inc.	25	6	$333.6M
#251	Crowley Logistics, Inc.	12	1	$331.0M
#252	Tpc-nan a Joint Venture	1	0	$330.8M
#253	The Pennsylvania State University	25	2	$330.7M
#254	Peckham Vocational Industries, Inc.	25	4	$330.5M
#255	Fca Us LLC	25	1	$329.7M
#256	Cognosante Mvh LLC	25	2	$327.7M
#257	J & J Maintenance Inc.	25	1	$326.6M
#258	A-mark Precious Metals, Inc.	25	1	$326.5M
#259	Affigent, LLC	25	10	$325.1M
#260	Aar Government Services, Inc.	25	3	$323.6M
#261	Countertrade Products, Inc.	25	9	$321.9M
#262	Data Link Solutions LLC	25	1	$320.5M
#263	W.w. Grainger, Inc.	25	2	$319.7M
#264	Aptim Federal Services, LLC	25	2	$317.6M
#265	The Toronto-dominion Bank	20	1	$317.5M
#266	Sonova Usa Inc.	25	1	$317.1M
#267	Ipg Dxtra, Inc.	13	1	$315.8M
#268	Livanta LLC	2	1	$314.8M
#269	Bae Systems Gcs International Limited	25	1	$314.8M
#270	Noblis, Inc.	25	8	$314.4M
#271	Bcg Federal Corp.	16	4	$310.9M
#272	Novitas Solutions, Inc.	7	1	$310.8M
#273	Alliant Techsystems Operations LLC	25	1	$309.9M
#274	Cdw Government LLC	25	8	$308.9M
#275	Linquest Corporation	25	2	$308.5M
#276	M. C. Dean, Inc.	25	4	$308.2M
#277	Balfour Beatty Construction, LLC	9	2	$305.0M
#278	Cae Usa Inc.	25	1	$304.5M
#279	Ohio Kepro, LLC	5	1	$298.6M
#280	Alsalam Aerospace Industries Company	8	1	$297.0M
#281	Valiant Global Defense Services Inc.	25	2	$295.2M
#282	American Systems Corporation	25	2	$294.6M
#283	General Dynamics Ordnance & Tactical Systems, Inc.	25	1	$293.3M
#284	Bae Systems San Diego Ship Repair Inc.	25	1	$292.5M
#285	Sterling Computers Corporation	25	5	$292.5M
#286	B.i. Incorporated	3	1	$288.3M
#287	Palantir Usg Inc.	25	2	$287.8M
#288	Marathon Petroleum Company Lp	25	1	$287.7M
#289	Bccg a Joint Venture	1	1	$287.0M
#290	Kearney & Company, P.c.	25	6	$286.4M
#291	Parker-hannifin Corporation	25	1	$283.8M
#292	Hpi Federal LLC	25	1	$283.8M
#293	Sodexo Management Inc.	10	4	$283.3M
#294	Lumen Technologies Government Solutions, Inc.	25	11	$280.3M
#295	Bae Systems Ordnance Systems Inc.	25	1	$278.1M
#296	Blue Tech Inc.	25	9	$277.9M
#297	Dlt Solutions, LLC	25	8	$274.5M
#298	Advanced Computer Concepts, Inc.	25	4	$272.5M
#299	Techflow, Inc.	14	4	$271.5M
#300	Corecivic, Inc.	25	2	$270.8M
#301	Maximus Education LLC	6	1	$270.7M
#302	Institute for Defense Analyses	25	6	$270.6M
#303	Elbit Systems of America - Night Vision LLC	25	1	$269.9M
#304	Laurel Technologies Partnership	25	1	$269.7M
#305	The Rand Corporation	25	3	$266.5M
#306	Sallyport Global Holdings Inc.	1	1	$266.0M
#307	Southwest Research Institute	25	3	$265.4M
#308	Abt Global LLC	25	3	$264.9M
#309	Palmetto Gba, LLC	21	2	$263.8M
#310	It Concepts, Inc.	25	9	$263.5M
#311	Hamilton Sundstrand Corporation	25	2	$263.1M
#312	Advantaged Solutions, LLC	18	3	$263.1M
#313	Concordance Healthcare Solutions LLC	25	4	$262.5M
#314	Government Acquisitions Inc.	25	7	$260.8M
#315	Dms Pharmaceutical Group Inc.	25	1	$260.1M
#316	Systems Planning and Analysis, Inc.	25	1	$259.6M
#317	Peraton Technology Services Inc.	25	5	$259.5M
#318	National Air Cargo Group, Inc.	25	1	$253.6M
#319	Palantir Technologies Inc.	25	8	$253.4M
#320	Fleet Vehicle Source Inc.	25	1	$253.2M
#321	Noridian Healthcare Solutions, LLC	8	1	$252.0M
#322	Walsh Federal LLC	25	3	$251.1M
#323	Range Generation Next LLC	3	1	$250.6M
#324	Mathematica Inc.	25	4	$250.1M
#325	Perimeter Solutions Lp	24	2	$248.2M
#326	Metgreen Solutions Inc.	25	6	$247.8M
#327	Amazon Web Services, Inc.	25	4	$245.9M
#328	Emergent Product Development Gaithersburg Inc.	6	2	$245.6M
#329	Ashbritt INC.	1	0	$245.5M
#330	Petro Star Inc.	25	1	$244.6M
#331	Association of Universities for Research in Astronomy, Inc.	5	2	$244.4M
#332	Korte Construction Company	20	1	$243.5M
#333	Grunley Construction Co., Inc.	25	8	$242.7M
#334	Global Food Services Company	25	1	$242.1M
#335	Inmarsat Government, Inc.	25	1	$240.6M
#336	General Atomics	25	2	$239.7M
#337	Amentum Parsons Logistics Services LLC	6	1	$239.5M
#338	Tyson Foods Inc.	25	1	$238.5M
#339	Agiliti Health Inc.	25	3	$237.9M
#340	Agile Decision Sciences, LLC	25	7	$237.7M
#341	Beyond New Horizons, LLC	1	0	$236.1M
#342	Core Tech-hdcc-kajima LLC	11	1	$234.2M
#343	Govcio, LLC	19	5	$233.6M
#344	Management & Training Corporation	25	1	$233.6M
#345	Igov Technologies, Inc.	25	3	$232.2M
#346	Siemens Medical Solutions Usa, Inc.	25	3	$230.6M
#347	Hui Huliau Technology Services LLC	7	1	$230.4M
#348	Inspiritec Inc.	3	3	$230.4M
#349	Black Construction-tutor Perini Jv	14	1	$228.0M
#350	Ea Engineering, Science, and Technology, Inc., Pbc	25	2	$227.1M
#351	Govsmart, Inc.	25	10	$226.8M
#352	Kgjj Engineering Solutions, LLC	25	1	$226.5M
#353	Teledyne Brown Engineering, Inc.	25	2	$226.0M
#354	Peraton Risk Decision Inc.	13	2	$225.7M
#355	Tecolote Research, Inc.	25	2	$225.7M
#356	Modern Technology Solutions, Inc.	25	3	$225.5M
#357	Gulfstream Aerospace Corporation	25	2	$224.8M
#358	Missouri Higher Education Loan Authority	7	1	$224.6M
#359	Bavarian Nordic A/s	2	2	$222.9M
#360	Intrepid LLC	13	1	$222.8M
#361	Tista Science and Technology Corporation	25	6	$220.9M
#362	Stg International, Inc.	25	4	$220.5M
#363	Professional Contract Services, Inc.	25	2	$220.5M
#364	Kiewit Infrastructure Co.	3	2	$220.3M
#365	Skookum Educational Programs	25	5	$218.0M
#366	Repkon USA - Defense, LLC	1	0	$217.5M
#367	Thales Defense & Security Inc.	25	1	$217.4M
#368	National Industries for the Blind	25	2	$216.8M
#369	Aerovironment, Inc.	25	1	$215.2M
#370	Jefferson Science Associates, LLC	1	1	$213.8M
#371	L3harris Fuzing and Ordnance Systems, Inc.	21	1	$213.5M
#372	Src Inc.	25	2	$212.9M
#373	The Lane Construction Corporation	3	1	$212.8M
#374	Omni Air International, LLC	1	0	$211.2M
#375	Sig Sauer Inc.	25	1	$211.1M
#376	Pride Industries	25	2	$210.3M
#377	Pacific Rim Constructors Inc.	9	1	$208.3M
#378	Kongsberg Defence & Aerospace As	25	1	$208.3M
#379	Applied Research Solutions, Inc.	14	2	$208.2M
#380	Owens & Minor Distribution Inc.	1	0	$208.0M
#381	Goodrich Corporation	25	1	$207.5M
#382	Tote Services, LLC	25	2	$207.0M
#383	Ge Precision Healthcare LLC	25	2	$206.0M
#384	First Nation Group LLC	25	1	$205.9M
#385	Cellco Partnership	1	0	$205.4M
#386	Reliance Test & Technology, LLC	2	1	$203.3M
#387	Johnson Controls Building Automation Systems, LLC	25	1	$203.1M
#388	Radiance Technologies Inc.	25	1	$203.0M
#389	Absher Construction Co	3	1	$202.9M
#390	Bae Systems Space & Mission Systems Inc.	25	2	$202.4M
#391	Drs Sustainment Systems Inc.	25	1	$201.8M
#392	American Rheinmetall Vehicles, LLC	1	1	$201.6M
#393	Software Information Resource Corp.	25	8	$201.5M
#394	General Dynamics Global Force, LLC	5	1	$201.3M
#395	Oasis Systems, LLC	25	3	$199.9M
#396	Seneca Strategic Partners, LLC	25	9	$199.5M
#397	Foreign Utility Consolidated Reporting	18	1	$199.0M
#398	Qatex Limited	4	1	$198.9M
#399	Reed Technology and Information Services LLC	1	0	$198.5M
#400	Creative It Solutions, LLC	25	4	$198.3M
#401	Triman Industries Inc.	25	1	$198.2M
#402	Empower Ai, Inc.	25	6	$198.0M
#403	Red River Technology LLC	25	10	$197.9M
#404	Kratos Unmanned Aerial Systems, Inc.	25	1	$197.9M
#405	Utah State University Space Dynamics Laboratory	25	2	$197.8M
#406	Fors Marsh Group LLC	25	5	$197.8M
#407	Us Foods Inc.	25	3	$197.3M
#408	American Roll-on Roll-off Carrier, LLC	25	1	$197.2M
#409	Placid Refining Company LLC	25	1	$197.1M
#410	Aktarius LLC	25	3	$196.6M
#411	International Auto Logistics, LLC	16	1	$196.5M
#412	General Dynamics One Source LLC	25	4	$196.0M
#413	Lc Industries Inc.	25	3	$194.5M
#414	Intuitive Research and Technology Corporation	25	1	$192.5M
#415	Guidehouse Digital LLC	25	6	$191.5M
#416	Efs Ebrex Sarl	25	1	$190.7M
#417	American Engineering Corporation	25	1	$190.7M
#418	Kelly Services, Inc.	25	1	$190.3M
#419	Science Systems and Applications, Inc.	12	3	$190.1M
#420	Global Enterprise Solutions, Inc.	25	2	$190.1M
#421	Teksynap Corporation	25	5	$190.1M
#422	Arcticom, LLC	25	4	$189.2M
#423	Ptsi Managed Services Inc.	25	4	$189.2M
#424	R. C. Construction Co., Inc.	7	1	$187.7M
#425	Gartner, Inc.	25	7	$187.5M
#426	Medical Place Inc.	25	1	$186.9M
#427	National Government Services, Inc.	11	1	$186.2M
#428	Fresenius Medical Care Holdings INC.	1	0	$186.0M
#429	Cherokee Nation Strategic Programs, L.l.c.	25	6	$185.8M
#430	Edfinancial Services LLC	6	1	$185.5M
#431	Granite Construction Company	10	2	$184.6M
#432	University of Dayton	25	2	$184.2M
#433	Crane & Co., Inc.	25	1	$183.7M
#434	Gilbane Federal	25	2	$183.6M
#435	Inter-con Security Systems, Inc.	25	3	$182.8M
#436	Colossal Contracting LLC	25	9	$182.8M
#437	Hii Fleet Support Group LLC	25	1	$182.0M
#438	Spatial Front Inc.	25	7	$181.4M
#439	Ch2m Hill, Inc.	25	3	$181.1M
#440	Schuyler Line Navigation Company LLC	25	1	$180.9M
#441	Trax International Corporation	8	2	$180.6M
#442	Ameriqual Group LLC	25	2	$180.2M
#443	Gs Caltex Corporation	7	1	$180.0M
#444	Tepa Ec, LLC	11	2	$180.0M
#445	Clark Construction Group - California, Lp	4	2	$179.1M
#446	Pacmed Clinics	2	1	$178.9M
#447	National Opinion Research Center	25	6	$178.9M
#448	Hydrogeologic, Inc.	25	2	$178.2M
#449	Itc Federal, LLC	25	5	$176.8M
#450	Akima Facilities Operations LLC	25	3	$176.6M
#451	Burns & Mcdonnell Engineering Company, Inc.	25	1	$175.7M
#452	S. J. Amoroso Construction Co., LLC	1	0	$175.7M
#453	Eastern Research Group Inc.	25	3	$175.6M
#454	Cdm Constructors Inc.	12	3	$175.3M
#455	Great Hill Solutions, LLC	25	7	$175.2M
#456	Renk America LLC	8	1	$174.9M
#457	Gzo, Inc.	25	1	$174.3M
#458	So-pak-co, Inc.	25	2	$174.0M
#459	Optumrx Administrative Services, LLC	6	1	$173.7M
#460	American Institutes for Research in the Behavioral Sciences	25	4	$173.5M
#461	Paragon Professional Services LLC	25	4	$172.7M
#462	Gryphon Technologies, L.c.	25	1	$172.0M
#463	Philips North America LLC	25	3	$172.0M
#464	General Motors LLC	25	2	$171.9M
#465	Motorola Solutions, Inc.	25	3	$171.7M
#466	Avantus Federal LLC	25	4	$171.6M
#467	Bundesamt F¿r Bauwesen Und Raumordnung	25	1	$171.3M
#468	Mccarthy Building Companies, Inc.	1	1	$169.5M
#469	Gsd&m LLC	25	1	$168.7M
#470	Boeing Sikorsky Aircraft Support, LLC	16	1	$167.9M
#471	Knight Point Systems, LLC	5	2	$167.7M
#472	Tetra Tech, Inc.	25	4	$167.5M
#473	Rei Systems, Inc.	25	7	$166.3M
#474	Centerra Group, LLC	25	7	$165.5M
#475	Deployed Services, LLC	7	3	$165.3M
#476	Carnegie Mellon University	25	2	$164.7M
#477	Signature Choice Ii, LLC	1	1	$164.5M
#478	Fairwinds Technologies LLC	25	2	$163.8M
#479	Potomac Electric Power Co	25	12	$163.4M
#480	Agile Defense, LLC	25	4	$163.1M
#481	M. A. Mortenson Company	25	5	$163.1M
#482	Chugach Technical Solutions LLC	25	3	$163.0M
#483	Mcp Computer Products Inc.	25	7	$162.2M
#484	Fluor Federal Petroleum Operations, LLC	1	1	$162.1M
#485	International Sos Government Services LLC	24	6	$161.8M
#486	Axle Informatics, LLC	25	1	$161.7M
#487	Chenega Global Protection, LLC	25	4	$161.6M
#488	Alvarez LLC	25	7	$161.6M
#489	Sauer Construction, LLC	25	2	$161.3M
#490	Wunderman Thompson LLC	1	1	$160.6M
#491	Saab, Inc.	25	3	$159.9M
#492	B 3 Group, LLC	8	1	$159.9M
#493	Smiths Detection Inc.	25	2	$159.6M
#494	Nan Inc.	25	3	$159.5M
#495	Air Transport International INC.	1	0	$159.1M
#496	Moeve S.a.	13	2	$158.3M
#497	Siemens Government Technologies Inc.	25	4	$158.1M
#498	Brighton Marine, Inc.	2	1	$158.1M
#499	Softrams LLC	19	5	$158.0M
#500	Wisconsin Physicians Service Insurance Corp.	10	2	$157.9M

Frequently Asked Questions

Who is the largest federal contractor?

Optum Public Sector Solutions, Inc. is the largest federal contractor in FY2024 with $20.1B in total obligations across 25 contracts. The next four — Lockheed Martin Corporation, Mckesson Corporation, The Boeing Company, Electric Boat Corporation — round out the top five.

How concentrated is federal contracting?

Federal contracting is heavily concentrated. The top 5 contractors capture roughly 11.9% of all federal obligations on this list, and the top 10 capture about 19.2%. The pattern is most extreme in defense — five primes (Lockheed Martin, RTX, General Dynamics, Boeing, Northrop Grumman) account for roughly 30% of all DOD spending.

What does the federal government actually buy from these contractors?

The mix varies sharply by contractor. Defense primes sell aircraft, ships, missiles, and weapon systems. IT primes (Leidos, SAIC, Booz Allen, Accenture Federal) sell professional services, cybersecurity, and software modernization. Healthcare contractors (Humana, Centene, UnitedHealth) earn most of their federal revenue through Medicare Advantage and TRICARE administration. Each contractor's profile breaks down its top categories using the Product and Service Code hierarchy.

Where does this ranking data come from?

Every figure is sourced from USAspending.gov, the official federal spending database mandated by the DATA Act. Recipient identity is reconciled to SAM.gov Unique Entity ID registrations, so subsidiaries that file separately roll up to a single parent contractor where the federal record supports it.

How current is the ranking?

The ranking covers FY2024 federal contract obligations as published by USAspending.gov. The current dataset was last refreshed April 2026. USAspending publishes daily updates from federal agencies; we pull the latest at each refresh and recompute the full ranking against the current dataset.

Why does the same contractor sometimes appear under multiple names?

Federal records sometimes carry the same parent under multiple legal names — divisions, subsidiaries, holding-company variants. We reconcile to the SAM.gov Unique Entity ID where possible, but normalization is imperfect. If you see what looks like a duplicate, check the linked profile pages: divergent UEIs typically mean the federal record itself treats them as separate entities, often because they are.

How These Ranks Are Calculated

Rankings sort recipients by total federal obligations for FY2024 as published by USAspending.gov. Recipient identity is reconciled to SAM.gov Unique Entity ID registrations. Industry context is drawn from the Product and Service Code hierarchy maintained by the Federal Procurement Data System. Obligations represent commitments, not necessarily disbursements; agencies sometimes de-obligate funds in later years. Read the full methodology.

Source: U.S. federal government, USAspending.gov. Data is public domain. Cite as: "TaxDollarData, top federal contractors, FY2024. Data: USAspending.gov."

Last updated 2026-04-09 · ranking covers 500 contractors.

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