Top 100 Department of the Navy Contractors, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Lockheed Martin Corporation 44 awardees, including Sikorsky Aircraft Corporation Top NAICS codes 336411 Aircraft Manufacturing 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 336414 Guided Missile and Space Vehicle Manufacturing	$18,604,993,207	14.1%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2020.
2	General Dynamics Corporation 51 awardees, including Electric Boat Corporation, Bath Iron Works Corporation and National Steel and Shipbuilding Company Top NAICS codes 336611 Ship Building and Repairing 541330 Engineering Services 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$12,016,057,836	9.1%	Rank history: #2 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; up 1 since FY2020.
3	RTX Corporation 87 awardees, including Raytheon Company, Data Link Solutions LLC and Rockwell Collins, Inc. Top NAICS codes 336412 Aircraft Engine and Engine Parts Manufacturing 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 336414 Guided Missile and Space Vehicle Manufacturing	$7,759,049,835	5.9%	Rank history: #3 in FY2022, #3 in FY2023, #3 in FY2024 and #3 in FY2025; up 4 since FY2020.
4	Huntington Ingalls Industries, Inc. 8 awardees, including Huntington Ingalls Inc., HII Fleet Support Group LLC and HII Mission Technologies Corp Top NAICS codes 336611 Ship Building and Repairing 541330 Engineering Services 811219 Other Electronic and Precision Equipment Repair and Maintenance	$5,783,877,592	4.4%	Rank history: #4 in FY2022, #4 in FY2023, #4 in FY2024 and #4 in FY2025; up 1 since FY2020.
5	The Boeing Company 35 awardees, including Insitu, Inc. and Boeing Distribution, Inc. Top NAICS codes 336411 Aircraft Manufacturing 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing 336412 Aircraft Engine and Engine Parts Manufacturing	$5,660,070,780	4.3%	Rank history: #6 in FY2022, #6 in FY2023, #5 in FY2024 and #5 in FY2025; down 1 since FY2020.
6	Northrop Grumman Corporation 51 awardees, including Northrop Grumman Systems Corporation and Alliant Techsystems Operations LLC Top NAICS codes 336411 Aircraft Manufacturing 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing	$3,705,420,016	2.8%	Rank history: #5 in FY2022, #5 in FY2023, #6 in FY2024 and #6 in FY2025; unchanged since FY2020.
7	Bell Boeing Joint Project Office Top NAICS codes 336411 Aircraft Manufacturing 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing 541330 Engineering Services	$2,368,421,291	1.8%	Rank history: #9 in FY2022, #18 in FY2023, #25 in FY2024 and #18 in FY2025; up 3 since FY2020.
8	BAE Systems PLC 35 awardees, including BAE Systems Land and Armaments L.P., BAE Systems Technology Solutions & Services Inc. and BAE Systems Maritime Solutions Norfolk Inc. Top NAICS codes 336611 Ship Building and Repairing 336992 Military Armored Vehicle, Tank, and Tank Component Manufacturing 541330 Engineering Services	$2,041,220,194	1.5%	Rank history: #7 in FY2022, #7 in FY2023, #7 in FY2024 and #7 in FY2025; up 1 since FY2020.
9	Bechtel Corp Through Bechtel Plant Machinery, Inc. Top NAICS codes 332410 Power Boiler and Heat Exchanger Manufacturing	$2,000,472,737	1.5%	Rank history: #8 in FY2022, #11 in FY2023, #8 in FY2024 and #8 in FY2025; up 15 since FY2020.
10	General Electric Company 28 awardees, including GE Aviation Systems LLC, GE Energy Power Conversion USA Inc. and GE Energy Power Conversion Naval Systems Inc. Top NAICS codes 336412 Aircraft Engine and Engine Parts Manufacturing 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing 336611 Ship Building and Repairing	$1,541,378,215	1.2%	Rank history: #17 in FY2022, #9 in FY2023, #19 in FY2024 and #23 in FY2025; up 2 since FY2020.
11	Fluor Corporation 3 awardees, including Fluor Marine Propulsion, LLC and Fluor Intercontinental, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 561210 Facilities Support Services 541330 Engineering Services	$1,448,015,303	1.1%	Rank history: #10 in FY2022, #8 in FY2023, #10 in FY2024 and #9 in FY2025; up 8 since FY2020.
12	Ministry of Defense	$1,130,173,545	0.9%	Rank history: #13 in FY2022, #15 in FY2023, #24 in FY2024 and #22 in FY2025; new, not ranked in FY2020.
13	L3Harris Technologies, Inc. 63 awardees, including L3 Technologies, Inc., L3Harris Maritime Services Inc. and Harris Corporation Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 541330 Engineering Services	$1,103,057,156	0.8%	Rank history: #12 in FY2022, #10 in FY2023, #14 in FY2024 and #14 in FY2025; up 1 since FY2020.
14	Government of the United States 14 awardees, including Department of Energy, Federal Prison Industries, Inc. and Bonneville Power Administration Top NAICS codes 332410 Power Boiler and Heat Exchanger Manufacturing 337910 Mattress Manufacturing 238990 All Other Specialty Trade Contractors	$1,076,046,529	0.8%	Rank history: #42 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
15	Booz Allen Hamilton Holding Corporation 4 awardees, including Booz Allen Hamilton Inc., Booz Allen Hamilton Engineering Services, LLC and Riverside Engineering LLC Top NAICS codes 541330 Engineering Services 541512 Computer Systems Design Services 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$899,981,816	0.7%	Rank history: #14 in FY2022, #13 in FY2023, #15 in FY2024 and #17 in FY2025; up 6 since FY2020.
16	Leidos Holdings, Inc. 23 awardees, including Leidos, Inc. and Dynetics, Inc. Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$886,955,244	0.7%	Rank history: #11 in FY2022, #12 in FY2023, #12 in FY2024 and #12 in FY2025; up 21 since FY2020.
17	Core Tech-Hdcc-Kajima LLC Top NAICS codes 236116 New Multifamily Housing Construction (except For-Sale Builders) 236220 Commercial and Institutional Building Construction	$730,391,353	0.6%	Rank history: not on the FY2022 list, #56 in FY2023, #53 in FY2024 and #35 in FY2025; new, not ranked in FY2020.
18	Amentum Services, Inc. 4 awardees, including Dyncorp International LLC and Central Plateau Cleanup Company, LLC Top NAICS codes 488190 Other Support Activities for Air Transportation 541330 Engineering Services 336411 Aircraft Manufacturing	$725,338,944	0.5%	Rank history: #15 in FY2022, #16 in FY2023, #13 in FY2024 and not on the FY2025 list; up 100 since FY2020.
19	Science Applications International Corporation 12 awardees, including Engility Services, LLC, Asrc Federal Facilities Logistics, LLC and Halfaker and Associates, LLC Top NAICS codes 541330 Engineering Services 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$710,016,597	0.5%	Rank history: #16 in FY2022, #17 in FY2023, #21 in FY2024 and #20 in FY2025; up 4 since FY2020.
20	Kbr, Inc. 8 awardees, including KBR Services, LLC and KBR Wyle Services, LLC Top NAICS codes 561210 Facilities Support Services 541330 Engineering Services 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$620,771,588	0.5%	Rank history: #23 in FY2022, #36 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2020.
21	Fincantieri Marine Systems North America Inc. 6 awardees, including Marinette Marine Corporation, Vard Marine US Inc. and Grandi Trasporti S.R.L. Top NAICS codes 336611 Ship Building and Repairing 333618 Other Engine Equipment Manufacturing 336612 Boat Building	$577,146,455	0.4%	Rank history: #20 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
22	CACI International Inc. 16 awardees, including Caci, Inc. - Federal, Caci Enterprise Solutions, LLC and Caci Technologies, LLC Top NAICS codes 541330 Engineering Services 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$572,367,168	0.4%	Rank history: #28 in FY2022, #22 in FY2023, #28 in FY2024 and #21 in FY2025; up 9 since FY2020.
23	The Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541330 Engineering Services 611310 Colleges, Universities, and Professional Schools	$568,607,818	0.4%	Rank history: #24 in FY2022, #24 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
24	Rolls-Royce Military Aero Engines Ltd 11 awardees, including Rolls-Royce Corporation, Rolls-Royce Marine North America Inc. and Rolls-Royce Solutions America Inc. Top NAICS codes 336412 Aircraft Engine and Engine Parts Manufacturing 336611 Ship Building and Repairing 332999 All Other Miscellaneous Fabricated Metal Product Manufacturing	$541,006,656	0.4%	Rank history: #22 in FY2022, #28 in FY2023, #67 in FY2024 and not on the FY2025 list; up 3 since FY2020.
25	Serco North America (Holdings) Inc 6 awardees, including Serco Inc., Serco-Ips Corporation and Whitney Bradley & Brown, Inc. Top NAICS codes 541330 Engineering Services 334290 Other Communications Equipment Manufacturing 561621 Security Systems Services (except Locksmiths)	$531,819,892	0.4%	Rank history: #25 in FY2022, #45 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2020.
26	Alion Science and Technology Corporation 3 awardees, including HII Mission Technologies Corp Top NAICS codes 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$501,673,029	0.4%	Rank history: #62 in FY2022, #25 in FY2023 and not on the FY2024–FY2025 lists; up 15 since FY2020.
27	BAE Systems Land & Armaments L.P. 21 awardees, including BAE Systems Maritime Solutions Jacksonville LLC, BAE Systems Maritime Solutions San Diego Inc. and BAE Systems Technology Solutions & Services Inc. Top NAICS codes 336611 Ship Building and Repairing 541330 Engineering Services 332994 Small Arms, Ordnance, and Ordnance Accessories Manufacturing	$457,893,837	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
28	Vertex Aerospace LLC 3 awardees, including V2X Aerospace LLC Top NAICS codes 488190 Other Support Activities for Air Transportation 336411 Aircraft Manufacturing 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing	$451,765,362	0.3%	Rank history: #19 in FY2022, #19 in FY2023 and not on the FY2024–FY2025 lists; up 48 since FY2020.
29	Perspecta Inc. 7 awardees, including Peraton Enterprise Solutions LLC, Peraton Technology Services Inc. and Analex Corporation Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$449,830,275	0.3%	Rank history: not on the FY2022–FY2025 lists; down 7 since FY2020.
30	Leonardo S.p.A. 25 awardees, including Laurel Technologies Partnership, DRS Systems, Inc. and DRS Naval Power Systems Inc. Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing	$430,985,998	0.3%	Rank history: #36 in FY2022, #35 in FY2023, #35 in FY2024 and #39 in FY2025; up 3 since FY2020.
31	The Whiting-Turner Contracting Company Top NAICS codes 236220 Commercial and Institutional Building Construction 238220 Plumbing, Heating, and Air-Conditioning Contractors 237310 Highway, Street, and Bridge Construction	$410,471,877	0.3%	Rank history: not on the FY2022 list, #51 in FY2023, #42 in FY2024 and #67 in FY2025; up 3 since FY2020.
32	The Charles Stark Draper Laboratory, Inc. Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$382,823,827	0.3%	Rank history: #37 in FY2022, #32 in FY2023, #26 in FY2024 and #38 in FY2025; up 4 since FY2020.
33	Alberici-Mortenson A Joint Venture Top NAICS codes 237990 Other Heavy and Civil Engineering Construction	$369,949,779	0.3%	Rank history: not on the FY2022–FY2025 lists; up 28 since FY2020.
34	RQ Construction, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction 237310 Highway, Street, and Bridge Construction 327320 Ready-Mix Concrete Manufacturing	$350,570,089	0.3%	Rank history: #32 in FY2022, #31 in FY2023, #45 in FY2024 and #32 in FY2025; up 9 since FY2020.
35	Analytic Services Inc. Through Advanced Technology International Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541330 Engineering Services	$338,185,499	0.3%	Rank history: #26 in FY2022, #14 in FY2023, #43 in FY2024 and #13 in FY2025; up 34 since FY2020.
36	Textron Inc. 10 awardees, including Bell Textron Inc., Textron Systems Corporation and Textron Aviation Inc. Top NAICS codes 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing 541370 Surveying and Mapping (except Geophysical) Services 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$329,260,163	0.2%	Rank history: #40 in FY2022, #21 in FY2023, #18 in FY2024 and #10 in FY2025; down 23 since FY2020.
37	Austal Limited 2 awardees, including Austal Usa, LLC and Austal USA Advanced Technologies, Inc. Top NAICS codes 336611 Ship Building and Repairing 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance 811219 Other Electronic and Precision Equipment Repair and Maintenance	$302,838,287	0.2%	Rank history: #18 in FY2022, #34 in FY2023 and not on the FY2024–FY2025 lists; up 46 since FY2020.
38	Erapsco Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$290,846,363	0.2%	Rank history: #41 in FY2022, #43 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
39	Jacobs Engineering Group Inc. 20 awardees, including Amentum Technology, Inc., Ch2M Hill, Inc. and Ch2M Hill Constructors, Inc. Top NAICS codes 541330 Engineering Services 561210 Facilities Support Services 236220 Commercial and Institutional Building Construction	$278,687,072	0.2%	Rank history: #34 in FY2022, #40 in FY2023 and not on the FY2024–FY2025 lists; up 15 since FY2020.
40	Viasat Inc. 2 awardees Top NAICS codes 334290 Other Communications Equipment Manufacturing 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 517410 Satellite Telecommunications	$260,014,590	0.2%	Rank history: #43 in FY2022, #50 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
41	Crowley Government Services Inc. 2 awardees, including Crowley Marine Services, Inc. Top NAICS codes 483111 Deep Sea Freight Transportation 488330 Navigational Services to Shipping 488310 Port and Harbor Operations	$245,828,680	0.2%	Rank history: #53 in FY2022 and not on the FY2023–FY2025 lists; up 12 since FY2020.
42	American Maritime Holdings, LLC 2 awardees, including Marine Hydraulics International, LLC and Tecnico Corporation Top NAICS codes 336611 Ship Building and Repairing	$243,246,340	0.2%	Rank history: #72 in FY2022 and not on the FY2023–FY2025 lists; up 24 since FY2020.
43	General Atomic Technologies Corporation 4 awardees, including General Atomics and General Atomics Aeronautical Systems, Inc. Top NAICS codes 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing 541370 Surveying and Mapping (except Geophysical) Services 336411 Aircraft Manufacturing	$239,432,775	0.2%	Rank history: #29 in FY2022, #20 in FY2023, #90 in FY2024 and not on the FY2025 list; down 4 since FY2020.
44	Deloitte LLP 4 awardees, including Deloitte Consulting LLP, Deloitte & Touche LLP and Deloitte Financial Advisory Services LLP Top NAICS codes 541219 Other Accounting Services 541611 Administrative Management and General Management Consulting Services 541330 Engineering Services	$233,136,874	0.2%	Rank history: #64 in FY2022, #53 in FY2023 and not on the FY2024–FY2025 lists; up 70 since FY2020.
45	Patriot Contract Services, LLC Top NAICS codes 483111 Deep Sea Freight Transportation	$216,048,708	0.2%	Rank history: #39 in FY2022, #39 in FY2023, #36 in FY2024 and #48 in FY2025; up 7 since FY2020.
46	Hensel Phelps Construction Co 5 awardees, including Hensel Phelps - Shimizu JV Top NAICS codes 236220 Commercial and Institutional Building Construction	$213,935,736	0.2%	Rank history: #46 in FY2022, #87 in FY2023, #72 in FY2024 and #100 in FY2025; up 152 since FY2020.
47	Harper Construction Company, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$212,392,519	0.2%	Rank history: #74 in FY2022, #96 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
48	ST Engineering Halter Marine and Offshore Inc. 4 awardees, including Bollinger Mississippi Shipbuilding, LLC, ST Engineering Marine Ltd. and Ecoservices, LLC Top NAICS codes 336611 Ship Building and Repairing 333999 All Other Miscellaneous General Purpose Machinery Manufacturing 336612 Boat Building	$204,085,906	0.2%	Rank history: #21 in FY2022 and not on the FY2023–FY2025 lists; up 135 since FY2020.
49	General Dynamics Mission Systems, Inc. Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 332993 Ammunition (except Small Arms) Manufacturing 541330 Engineering Services	$203,353,463	0.2%	Rank history: #56 in FY2022, #77 in FY2023, #63 in FY2024 and not on the FY2025 list; up 9 since FY2020.
50	Mantech Tsg-2 Joint Venture Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$200,637,514	0.2%	Rank history: #58 in FY2022, #55 in FY2023, #32 in FY2024 and #49 in FY2025; up 6 since FY2020.
51	Insight Public Sector Inc. 7 awardees, including Pcmg, Inc., Insight Direct USA Inc. and Insight Technology Solutions, LLC Top NAICS codes 511210 Software Publishers 334111 Electronic Computer Manufacturing 541519 Other Computer Related Services	$196,465,046	0.1%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
52	Vectrus Systems Corporation 5 awardees, including V2X Systems LLC and Vectrus-J&J Facilities Support, LLC Top NAICS codes 561210 Facilities Support Services 541330 Engineering Services 336411 Aircraft Manufacturing	$193,758,460	0.1%	Rank history: #48 in FY2022, #44 in FY2023 and not on the FY2024–FY2025 lists; up 55 since FY2020.
53	Scientific Research Corporation Top NAICS codes 541330 Engineering Services 334417 Electronic Connector Manufacturing	$191,708,063	0.1%	Rank history: #65 in FY2022, #54 in FY2023, #44 in FY2024 and #50 in FY2025; up 15 since FY2020.
54	The Pennsylvania State University 3 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 611310 Colleges, Universities, and Professional Schools 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$190,180,971	0.1%	Rank history: #51 in FY2022, #49 in FY2023, #50 in FY2024 and #54 in FY2025; up 8 since FY2020.
55	Sodexo Through Sodexo Management Inc. Top NAICS codes 722310 Food Service Contractors	$189,735,107	0.1%	Rank history: #89 in FY2022 and not on the FY2023–FY2025 lists; up 38 since FY2020.
56	Ultra Electronics Forensic Technology Inc 16 awardees, including Ultra Electronics Ocean Systems Inc., Ultra Electronics TCS Inc. and Ultra Electronics Advanced Tactical Systems Inc. Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334210 Telephone Apparatus Manufacturing 541511 Custom Computer Programming Services	$185,792,889	0.1%	Rank history: #98 in FY2022, #85 in FY2023 and not on the FY2024–FY2025 lists; up 18 since FY2020.
57	Young & Rubicam Inc. 2 awardees, including Wunderman Thompson LLC Top NAICS codes 541810 Advertising Agencies	$179,362,350	0.1%	Rank history: #49 in FY2022 and not on the FY2023–FY2025 lists; up 10 since FY2020.
58	Thoma-Sea Marine Constructors, L.L.C. Top NAICS codes 336611 Ship Building and Repairing	$178,219,734	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
59	Leonardo Helicopters US Corporation Top NAICS codes 336411 Aircraft Manufacturing	$171,047,760	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
60	Maersk Inc. 3 awardees, including U.s. Marine Management, LLC and Maersk Line, Limited Top NAICS codes 483111 Deep Sea Freight Transportation	$169,385,192	0.1%	Rank history: #52 in FY2022, #57 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2020.
61	Mantech International Corporation 6 awardees, including Mantech Advanced Systems International, Inc. and Mantech SRS Technologies, Inc. Top NAICS codes 541330 Engineering Services 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$168,389,673	0.1%	Rank history: #50 in FY2022, #59 in FY2023, #51 in FY2024 and #52 in FY2025; up 44 since FY2020.
62	Thomas Scientific LLC 9 awardees, including Vigor Marine LLC, Unison Software Inc. and Vigor Kvichak LLC Top NAICS codes 336611 Ship Building and Repairing 336612 Boat Building 541519 Other Computer Related Services	$167,054,150	0.1%	Rank history: #35 in FY2022, #46 in FY2023, #47 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
63	Gryphon Technologies, Inc. 6 awardees, including Gryphon Technologies, L.C., Schafer Government Services, LLC and Gryphon Marine, LLC Top NAICS codes 541330 Engineering Services 541990 All Other Professional, Scientific, and Technical Services 336611 Ship Building and Repairing	$155,977,620	0.1%	Rank history: not on the FY2022 list, #72 in FY2023 and not on the FY2024–FY2025 lists; up 14 since FY2020.
64	VSE Corporation 2 awardees Top NAICS codes 336611 Ship Building and Repairing 336411 Aircraft Manufacturing 541330 Engineering Services	$153,929,615	0.1%	Rank history: #60 in FY2022, #67 in FY2023 and not on the FY2024–FY2025 lists; up 56 since FY2020.
65	Dell Federal Systems L.P. 4 awardees, including Dell Marketing L.P. Top NAICS codes 511210 Software Publishers 334111 Electronic Computer Manufacturing 541519 Other Computer Related Services	$151,230,008	0.1%	Rank history: #33 in FY2022, #29 in FY2023 and not on the FY2024–FY2025 lists; up 154 since FY2020.
66	Smartronix LLC Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 334111 Electronic Computer Manufacturing	$144,834,649	0.1%	Rank history: #45 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; up 65 since FY2020.
67	Teledyne Technologies Incorporated 34 awardees, including Teledyne Brown Engineering, Inc., Teledyne Flir, LLC and Teledyne Defense Electronics, LLC Top NAICS codes 336611 Ship Building and Repairing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing	$138,643,783	0.1%	Rank history: not on the FY2022–FY2023 lists, #83 in FY2024 and not on the FY2025 list; up 68 since FY2020.
68	International Business Machines Corporation Top NAICS codes 541519 Other Computer Related Services 541330 Engineering Services 541512 Computer Systems Design Services	$138,405,276	0.1%	Rank history: #66 in FY2022, #62 in FY2023, #52 in FY2024 and #65 in FY2025; up 94 since FY2020.
69	Solpac Construction Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$136,768,983	0.1%	Rank history: not on the FY2022–FY2025 lists; up 53 since FY2020.
70	IAP Global Services LLC 4 awardees, including Iap-Ecc LLC, IAP World Services, Inc. and IAP Worldwide Services, Inc. Top NAICS codes 561210 Facilities Support Services 488190 Other Support Activities for Air Transportation 541330 Engineering Services	$136,609,319	0.1%	Rank history: not on the FY2022–FY2025 lists; up 22 since FY2020.
71	Ram-System GMBH Top NAICS codes 336414 Guided Missile and Space Vehicle Manufacturing 332919 Other Metal Valve and Pipe Fitting Manufacturing 333999 All Other Miscellaneous General Purpose Machinery Manufacturing	$135,962,061	0.1%	Rank history: not on the FY2022 list, #23 in FY2023, not on the FY2024 list and #36 in FY2025; new, not ranked in FY2020.
72	AECOM 13 awardees, including AECOM Technical Services, Inc., Aecom-Baker-Cardno Navfac Atlantic Planning JV and AECOM Usa, Inc. Top NAICS codes 541330 Engineering Services 561210 Facilities Support Services 236220 Commercial and Institutional Building Construction	$133,917,585	0.1%	Rank history: #38 in FY2022, #41 in FY2023 and not on the FY2024–FY2025 lists; down 44 since FY2020.
73	DLT Solutions LLC 3 awardees, including TECH Data Government Solutions, LLC and Exitcertified LLC Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$132,491,936	0.1%	Rank history: not on the FY2022 list, #95 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
74	Honeywell International Inc. 32 awardees, including Honeywell Building Solutions SES Corp and Ems Technologies Canada, Ltd Top NAICS codes 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing 332510 Hardware Manufacturing 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$132,115,621	0.1%	Rank history: #57 in FY2022, #26 in FY2023, #54 in FY2024 and #19 in FY2025; up 22 since FY2020.
75	Government of Canada Through Canadian Commercial Corporation Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 325920 Explosives Manufacturing 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing	$131,134,727	0.1%	Rank history: #83 in FY2022 and not on the FY2023–FY2025 lists; up 35 since FY2020.
76	Epsilon Systems Solutions, Inc. 4 awardees, including Epsilon C5I Inc. Top NAICS codes 336611 Ship Building and Repairing 541330 Engineering Services 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$131,052,789	0.1%	Rank history: #70 in FY2022 and not on the FY2023–FY2025 lists; up 48 since FY2020.
77	Obayashi Corporation Through Webcor Construction LP Top NAICS codes 236220 Commercial and Institutional Building Construction	$129,615,580	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
78	Tutor Perini Corporation 3 awardees, including Black Construction Corporation, Perini Management Services, Inc. and ROY Anderson Corp Top NAICS codes 237990 Other Heavy and Civil Engineering Construction 236116 New Multifamily Housing Construction (except For-Sale Builders) 236220 Commercial and Institutional Building Construction	$129,180,874	0.1%	Rank history: not on the FY2022–FY2025 lists; up 20 since FY2020.
79	Saab AB 5 awardees, including Saab, Inc., Saab Dynamics Aktiebolag and Saab Barracuda LLC Top NAICS codes 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 332994 Small Arms, Ordnance, and Ordnance Accessories Manufacturing	$126,476,780	0.1%	Rank history: #63 in FY2022 and not on the FY2023–FY2025 lists; up 113 since FY2020.
80	Clark Construction Group LLC 3 awardees, including Clark Construction LLC and Clark Construction Group - California, LP Top NAICS codes 236220 Commercial and Institutional Building Construction 237990 Other Heavy and Civil Engineering Construction	$125,391,892	0.1%	Rank history: #69 in FY2022, not on the FY2023 list, #68 in FY2024 and not on the FY2025 list; up 22 since FY2020.
81	QED Systems, Inc. Top NAICS codes 336611 Ship Building and Repairing 541330 Engineering Services 339114 Dental Equipment and Supplies Manufacturing	$124,153,184	0.1%	Rank history: not on the FY2022–FY2025 lists; up 25 since FY2020.
82	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers 334111 Electronic Computer Manufacturing 541519 Other Computer Related Services	$121,748,252	0.1%	Rank history: #73 in FY2022, #93 in FY2023, #59 in FY2024 and #55 in FY2025; up 69 since FY2020.
83	Kay and Associates, Inc. Top NAICS codes 488190 Other Support Activities for Air Transportation 336411 Aircraft Manufacturing	$119,852,212	0.1%	Rank history: #100 in FY2022, not on the FY2023–FY2024 lists and #83 in FY2025; up 43 since FY2020.
84	Remington Arms Company LLC 2 awardees, including Dyncorp International LLC Top NAICS codes 488190 Other Support Activities for Air Transportation 561210 Facilities Support Services 541611 Administrative Management and General Management Consulting Services	$118,820,720	0.1%	Rank history: not on the FY2022–FY2025 lists; down 42 since FY2020.
85	HP, Inc. Through HPI Federal LLC Top NAICS codes 541512 Computer Systems Design Services 334111 Electronic Computer Manufacturing	$116,003,539	0.1%	Rank history: #78 in FY2022, #68 in FY2023 and not on the FY2024–FY2025 lists; up 61 since FY2020.
86	VT Milcom Inc. 4 awardees, including Delta Resources, Inc. and National Technologies Associates, Inc. Top NAICS codes 541330 Engineering Services 488190 Other Support Activities for Air Transportation 336411 Aircraft Manufacturing	$114,034,213	0.1%	Rank history: not on the FY2022–FY2025 lists; up 63 since FY2020.
87	Chugach Alaska Corporation 5 awardees, including Defense Base Services, LLC, Chugach Consolidated Solutions, LLC and Chugach Information Technology LLC Top NAICS codes 561210 Facilities Support Services 236220 Commercial and Institutional Building Construction 541330 Engineering Services	$113,686,695	0.1%	Rank history: not on the FY2022–FY2025 lists; up 3 since FY2020.
88	University of Texas System 7 awardees, including University of Texas At Austin, The University of Texas Health Science Center At Houston and University of Texas Medical Branch At Galveston Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 611310 Colleges, Universities, and Professional Schools	$112,300,014	0.1%	Rank history: #87 in FY2022 and not on the FY2023–FY2025 lists; up 13 since FY2020.
89	Marine Group Boat Works, LLC Top NAICS codes 336611 Ship Building and Repairing 336612 Boat Building	$110,142,035	0.1%	Rank history: not on the FY2022–FY2025 lists; up 163 since FY2020.
90	Microsoft Corporation Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services 541513 Computer Facilities Management Services	$106,437,960	0.1%	Rank history: #68 in FY2022, #82 in FY2023, #78 in FY2024 and not on the FY2025 list; up 23 since FY2020.
91	Kpmg L.L.P. Top NAICS codes 541219 Other Accounting Services 541611 Administrative Management and General Management Consulting Services 541211 Offices of Certified Public Accountants	$104,597,215	0.1%	Rank history: not on the FY2022–FY2025 lists; up 32 since FY2020.
92	Tyonek Native Corporatio 5 awardees, including Tyonek Services Overhaul Facility-Stennis, LLC, Tyonek Global Services LLC and Tyonek Worldwide Services Inc. Top NAICS codes 488190 Other Support Activities for Air Transportation 336411 Aircraft Manufacturing 336412 Aircraft Engine and Engine Parts Manufacturing	$103,622,387	0.1%	Rank history: not on the FY2022–FY2025 lists; up 84 since FY2020.
93	PAE Government Services Inc. 5 awardees, including PAE Aviation and Technical Services LLC, Centra Technology, Inc. and PAE National Security Solutions LLC Top NAICS codes 488190 Other Support Activities for Air Transportation 561210 Facilities Support Services 541990 All Other Professional, Scientific, and Technical Services	$102,453,381	0.1%	Rank history: #88 in FY2022 and not on the FY2023–FY2025 lists; up 379 since FY2020.
94	Sumitomo Heavy Industries, Ltd. 7 awardees, including Sumiju Yokosuka Kogyo Co., Ltd., Izumi Support Corporation and Sumitomo Heavy Industries Material Handling Systems Co., Ltd. Top NAICS codes 336611 Ship Building and Repairing 236220 Commercial and Institutional Building Construction 238990 All Other Specialty Trade Contractors	$101,598,464	0.1%	Rank history: #92 in FY2022 and not on the FY2023–FY2025 lists; up 39 since FY2020.
95	Kratos Defense & Security Solutions, Inc. 10 awardees, including Kratos Unmanned Aerial Systems, Inc., Kratos Technology & Training Solutions, Inc. and Gichner Systems Group, Inc. Top NAICS codes 336414 Guided Missile and Space Vehicle Manufacturing 611630 Language Schools 332311 Prefabricated Metal Building and Component Manufacturing	$101,444,613	0.1%	Rank history: not on the FY2022–FY2025 lists; up 32 since FY2020.
96	Dzsp 21 LLC Top NAICS codes 561210 Facilities Support Services 488390 Other Support Activities for Water Transportation	$100,163,164	0.1%	Rank history: #99 in FY2022, #99 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
97	Delphinus Engineering LLC Top NAICS codes 336611 Ship Building and Repairing 541330 Engineering Services 334419 Other Electronic Component Manufacturing	$100,008,233	0.1%	Rank history: not on the FY2022–FY2025 lists; up 44 since FY2020.
98	Precise Systems, Inc. Top NAICS codes 541330 Engineering Services 541511 Custom Computer Programming Services	$99,749,443	0.1%	Rank history: #86 in FY2022, #83 in FY2023, #77 in FY2024 and #77 in FY2025; up 42 since FY2020.
99	Black Construction-Tutor Perini JV Top NAICS codes 236116 New Multifamily Housing Construction (except For-Sale Builders) 236220 Commercial and Institutional Building Construction	$98,512,457	0.1%	Rank history: #44 in FY2022, not on the FY2023 list, #56 in FY2024 and #98 in FY2025; up 167 since FY2020.
100	H2O Guam JV Top NAICS codes 237990 Other Heavy and Civil Engineering Construction	$97,995,000	0.1%	Rank history: not on the FY2022 list, #94 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.

How this ranking works

• Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
• Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $132 billion obligated before deobligations, so they never pass 100%.
• Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
• Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
• Rank changes compare with FY2020. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
• Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2020 takes the color of the rank change beside it.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

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