Top 100 Contractors in NAICS 541: Professional, Scientific, and Technical Services, FY2022

Name: Top 100 Contractors in NAICS 541: Professional, Scientific, and Technical Services, FY2022
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2021 – Sep 30, 2022 Code page on GovTribe

The top 10 won 22% of FY2022 NAICS 541 contract dollars

Contract obligations: $202,813,753,413 Net of deobligations, by contracts coded NAICS 541 or a code under it
Contractors: 21,415 Parent companies with an obligation
Largest contractor: General Dynamics Corporation $7.39 billion, 3.5% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	General Dynamics Corporation 52 awardees, including Electric Boat Corporation, General Dynamics Information Technology, Inc. and General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$7,392,919,478	3.5%	Rank history: #1 in FY2021, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2021.
2	Lockheed Martin Corporation 52 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$6,678,278,543	3.1%	Rank history: #2 in FY2021, #2 in FY2023, #3 in FY2024 and #2 in FY2025; unchanged since FY2021.
3	Leidos Holdings, Inc. 35 awardees, including Leidos, Inc. and Leidos Biomedical Research Inc. Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$6,438,093,326	3.0%	Rank history: #4 in FY2021, #4 in FY2023, #4 in FY2024 and #4 in FY2025; up 1 since FY2021.
4	Booz Allen Hamilton Holding Corporation 11 awardees, including Booz Allen Hamilton Inc., Liberty It Solutions LLC and Middle Bay Solutions II, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$5,991,556,701	2.8%	Rank history: #3 in FY2021, #3 in FY2023, #2 in FY2024 and #3 in FY2025; down 1 since FY2021.
5	RTX Corporation 79 awardees, including Raytheon Company Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$4,229,528,720	2.0%	Rank history: #6 in FY2021, #9 in FY2023, #11 in FY2024 and #11 in FY2025; up 1 since FY2021.
6	Science Applications International Corporation 17 awardees, including Forfeiture Support Associates LLC, Halfaker and Associates, LLC and Engility Services, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$4,039,081,476	1.9%	Rank history: #7 in FY2021, #6 in FY2023, #5 in FY2024 and #7 in FY2025; up 1 since FY2021.
7	Northrop Grumman Corporation 75 awardees, including Northrop Grumman Systems Corporation and Orbital Sciences LLC Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency) Navy (Department of the Navy)	$3,993,903,957	1.9%	Rank history: #5 in FY2021, #5 in FY2023, #6 in FY2024 and #6 in FY2025; down 2 since FY2021.
8	Fluor Corporation 3 awardees, including Fluor Marine Propulsion, LLC Top agencies Navy (Department of the Navy) DOE (Department of Energy)	$3,085,501,820	1.5%	Rank history: #8 in FY2021, #7 in FY2023, #7 in FY2024 and #8 in FY2025; unchanged since FY2021.
9	CACI International Inc. 37 awardees, including Caci, Inc. - Federal, Caci Nss, LLC and Caci Technologies, LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security) Navy (Department of the Navy)	$2,851,494,074	1.3%	Rank history: #9 in FY2021, #8 in FY2023, #9 in FY2024 and #5 in FY2025; unchanged since FY2021.
10	California Institute of Technology 2 awardees Top agencies NASA (National Aeronautics and Space Administration) DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$2,613,710,147	1.2%	Rank history: #13 in FY2021, #12 in FY2023, #12 in FY2024 and #14 in FY2025; up 3 since FY2021.
11	The Mitre Corporation 3 awardees Top agencies USAF (Department of the Air Force) Army (Department of the Army) AAFES (Department of Defense Army and Air Force Exchange Service)	$2,575,275,234	1.2%	Rank history: #11 in FY2021, #10 in FY2023, #14 in FY2024 and #18 in FY2025; unchanged since FY2021.
12	Deloitte LLP 7 awardees, including Deloitte Consulting LLP, Deloitte & Touche LLP and Deloitte Financial Advisory Services LLP Top agencies HHS (Department of Health and Human Services) Treasury (Department of the Treasury) USAF (Department of the Air Force)	$2,248,590,010	1.1%	Rank history: #10 in FY2021, #14 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2021.
13	HP Enterprise Services LLC 24 awardees, including Peraton Inc., Peraton Enterprise Solutions LLC and Peraton Technology Services Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$2,203,352,751	1.0%	Rank history: #34 in FY2021, #11 in FY2023, #52 in FY2024 and not on the FY2025 list; up 21 since FY2021.
14	Battelle Memorial Institute 8 awardees, including Battelle Energy Alliance, LLC, Battelle Savannah River Alliance, LLC and Battelle National Biodefense Institute, LLC Top agencies DOE (Department of Energy) Army (Department of the Army) HHS (Department of Health and Human Services)	$1,967,811,451	0.9%	Rank history: #16 in FY2021, #48 in FY2023, #22 in FY2024 and #15 in FY2025; up 2 since FY2021.
15	Jacobs Engineering Group Inc. 44 awardees, including Amentum Technology, Inc., Ch2M Hill, Inc. and The Keyw Corporation Top agencies NASA (National Aeronautics and Space Administration) MDA (DOD Missile Defense Agency) USAF (Department of the Air Force)	$1,890,236,262	0.9%	Rank history: #15 in FY2021, #21 in FY2023, #84 in FY2024 and not on the FY2025 list; unchanged since FY2021.
16	The Boeing Company 44 awardees, including Insitu, Inc. Top agencies MDA (DOD Missile Defense Agency) Army (Department of the Army) USAF (Department of the Air Force)	$1,874,065,915	0.9%	Rank history: #12 in FY2021, #20 in FY2023, #16 in FY2024 and #23 in FY2025; down 4 since FY2021.
17	Accenture Federal Services LLC 7 awardees, including ASM Research, LLC and Avanade Inc. Top agencies Army (Department of the Army) DOE (Department of Energy) Treasury (Department of the Treasury)	$1,821,678,160	0.9%	Rank history: #14 in FY2021 and not on the FY2023–FY2025 lists; down 3 since FY2021.
18	L3Harris Technologies, Inc. 47 awardees, including L3Harris Technologies Integrated Systems L.P., L3Harris Interstate Electronics Corporation and L3 Technologies, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$1,689,817,992	0.8%	Rank history: #17 in FY2021, #19 in FY2023, #19 in FY2024 and #21 in FY2025; down 1 since FY2021.
19	The Johns Hopkins University 3 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration) MDA (DOD Missile Defense Agency)	$1,597,370,373	0.8%	Rank history: #20 in FY2021, #16 in FY2023, #78 in FY2024 and not on the FY2025 list; up 1 since FY2021.
20	Chemonics International, Inc. Top agencies USAID (US Agency for International Development)	$1,485,050,126	0.7%	Rank history: #18 in FY2021, #27 in FY2023, #21 in FY2024 and #29 in FY2025; down 2 since FY2021.
21	Oracle Health Government Services, Inc. Top agencies VA (Department of Veterans Affairs)	$1,409,205,392	0.7%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
22	Mantech International Corporation 17 awardees, including Mantech Advanced Systems International, Inc., Mantech SRS Technologies, Inc. and Tapestry Technologies, Inc. Top agencies DOJ (Department of Justice) Army (Department of the Army) Navy (Department of the Navy)	$1,265,308,170	0.6%	Rank history: #25 in FY2021, #37 in FY2023, #45 in FY2024 and #37 in FY2025; up 3 since FY2021.
23	Massachusetts Institute of Technology 2 awardees Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$1,213,237,681	0.6%	Rank history: #23 in FY2021, #23 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2021.
24	Kbr, Inc. 14 awardees, including KBR Wyle Services, LLC and Avantus Federal LLC Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) USAF (Department of the Air Force)	$1,205,035,714	0.6%	Rank history: #21 in FY2021, #22 in FY2023, #76 in FY2024 and not on the FY2025 list; down 3 since FY2021.
25	BAE Systems PLC 25 awardees, including BAE Systems Technology Solutions & Services Inc., BAE Systems Land & Armaments L.P. and BAE Systems Information & Electronic Systems Integration Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$1,196,421,288	0.6%	Rank history: #31 in FY2021, #18 in FY2023, #17 in FY2024 and #19 in FY2025; up 6 since FY2021.
26	The Aerospace Corporation Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) DOE (Department of Energy)	$1,155,261,452	0.5%	Rank history: #24 in FY2021, #28 in FY2023, #23 in FY2024 and #25 in FY2025; down 2 since FY2021.
27	Parsons Corporation 20 awardees, including Parsons Government Services Inc., Space Ground System Solutions, Inc. and Polaris Alpha, LLC Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency) DOT (Department of Transportation)	$1,122,908,037	0.5%	Rank history: #27 in FY2021, #29 in FY2023, #27 in FY2024 and #22 in FY2025; unchanged since FY2021.
28	Huntington Ingalls Industries, Inc. 12 awardees, including HII Mission Technologies Corp, HII Fleet Support Group LLC and Fulcrum It Services, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$994,443,393	0.5%	Rank history: #78 in FY2021, #43 in FY2023, #15 in FY2024 and #17 in FY2025; up 50 since FY2021.
29	CGI Technologies and Solutions Inc. 3 awardees, including CGI Federal Inc. Top agencies DOS (Department of State) VA (Department of Veterans Affairs) DHS (Department of Homeland Security)	$977,162,233	0.5%	Rank history: #30 in FY2021, #34 in FY2023, #70 in FY2024 and not on the FY2025 list; up 1 since FY2021.
30	Brookhaven Science Associates LLC Top agencies DOE (Department of Energy)	$950,764,627	0.4%	Rank history: #36 in FY2021, #40 in FY2023, #39 in FY2024 and #38 in FY2025; up 6 since FY2021.
31	Deloitte Consulting LLP 2 awardees Top agencies HHS (Department of Health and Human Services) Treasury (Department of the Treasury) Navy (Department of the Navy)	$946,601,491	0.4%	Rank history: not on the FY2021 list, #25 in FY2023 and not on the FY2024–FY2025 lists; up 297 since FY2021.
32	Serco North America (Holdings) Inc 7 awardees, including Serco Inc., Serco-Ips Corporation and Whitney Bradley & Brown, Inc. Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$935,964,031	0.4%	Rank history: #33 in FY2021, #57 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2021.
33	Space Exploration Technologies Corp. Top agencies NASA (National Aeronautics and Space Administration) SDA (Space Development Agency) OSD (Office of the Secretary of Defense)	$930,235,485	0.4%	Rank history: #53 in FY2021, #35 in FY2023, #46 in FY2024 and #90 in FY2025; up 20 since FY2021.
34	Accenture Inc. Through Accenture Federal Services LLC Top agencies DOE (Department of Energy) VA (Department of Veterans Affairs) Treasury (Department of the Treasury)	$907,651,369	0.4%	Rank history: not on the FY2021 list, #13 in FY2023 and not on the FY2024–FY2025 lists; new.
35	International Business Machines Corporation 8 awardees Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) Army (Department of the Army)	$905,555,310	0.4%	Rank history: #26 in FY2021, #36 in FY2023, #28 in FY2024 and #32 in FY2025; down 9 since FY2021.
36	Dell Federal Systems L.P. 6 awardees, including EMC Corporation, RSA Security LLC and Dell Marketing L.P. Top agencies Army (Department of the Army) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$877,739,777	0.4%	Rank history: #19 in FY2021, #61 in FY2023 and not on the FY2024–FY2025 lists; down 17 since FY2021.
37	Deployed Resources LLC Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$866,120,939	0.4%	Rank history: #65 in FY2021, #30 in FY2023, #20 in FY2024 and #63 in FY2025; up 28 since FY2021.
38	Alliance for Energy Innovation, LLC Top agencies DOE (Department of Energy) USAID (US Agency for International Development) OSD (Office of the Secretary of Defense)	$795,792,585	0.4%	Rank history: #44 in FY2021, #24 in FY2023, #26 in FY2024 and #35 in FY2025; up 6 since FY2021.
39	AECOM 38 awardees, including AECOM Technical Services, Inc., JT4 LLC and AECOM International Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$769,021,778	0.4%	Rank history: #45 in FY2021, #33 in FY2023, #68 in FY2024 and not on the FY2025 list; up 6 since FY2021.
40	General Dynamics Information Technology, Inc. Top agencies HHS (Department of Health and Human Services) DOS (Department of State) Navy (Department of the Navy)	$757,100,366	0.4%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 140 since FY2021.
41	Fcn, Inc. 2 awardees Top agencies Treasury (Department of the Treasury) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$728,028,487	0.3%	Rank history: #42 in FY2021, #32 in FY2023, #33 in FY2024 and #34 in FY2025; up 1 since FY2021.
42	Georgia TECH Research Corp 2 awardees, including Georgia TECH Applied Research Corp Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$709,614,185	0.3%	Rank history: #39 in FY2021, #39 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2021.
43	Guidehouse Inc. 4 awardees, including Guidehouse Digital LLC and Dovel Technologies LLC Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services) DOS (Department of State)	$699,095,313	0.3%	Rank history: #35 in FY2021, #45 in FY2023 and not on the FY2024–FY2025 lists; down 8 since FY2021.
44	Tetra Tech, Inc. 54 awardees, including Ard, Inc., Advanced Management Technology, Inc. and Bluewater Federal Solutions, Inc. Top agencies USAID (US Agency for International Development) USAF (Department of the Air Force) Navy (Department of the Navy)	$686,331,817	0.3%	Rank history: #38 in FY2021, #38 in FY2023, #37 in FY2024 and #51 in FY2025; down 6 since FY2021.
45	Thundercat Technology, LLC 2 awardees Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs) DHS (Department of Homeland Security)	$653,867,098	0.3%	Rank history: #47 in FY2021, #41 in FY2023, #40 in FY2024 and #36 in FY2025; up 2 since FY2021.
46	ICF International, Inc. 9 awardees, including ICF Incorporated, L.L.C., Incentive Technology Group LLC and Creative Systems and Consulting L.L.C. Top agencies HHS (Department of Health and Human Services) USAID (US Agency for International Development) EPA (Environmental Protection Agency)	$642,608,915	0.3%	Rank history: #40 in FY2021, #50 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2021.
47	Sierra Nevada Company, LLC 4 awardees, including Kutta Technologies, LLC Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) NASA (National Aeronautics and Space Administration)	$641,144,149	0.3%	Rank history: #37 in FY2021, #42 in FY2023 and not on the FY2024–FY2025 lists; down 10 since FY2021.
48	Amentum Services, Inc. 3 awardees, including URS Federal Services International, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency)	$630,386,609	0.3%	Rank history: #43 in FY2021, #55 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2021.
49	Torch Technologies Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$594,007,328	0.3%	Rank history: #52 in FY2021, #49 in FY2023, #47 in FY2024 and #46 in FY2025; up 3 since FY2021.
50	Arctic Slope Regional Corporation 18 awardees, including Arctic Slope Technical Services, Inc., Netcentric Technology, LLC and Asrc Federal System Solutions LLC Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) DOT (Department of Transportation)	$581,123,269	0.3%	Rank history: #46 in FY2021, #54 in FY2023, #56 in FY2024 and #28 in FY2025; down 4 since FY2021.
51	Omnicom Group Inc. 5 awardees, including DDB Chicago Inc., Gsd&M LLC and Porter Novelli Public Services Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$558,286,447	0.3%	Rank history: #49 in FY2021, #31 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2021.
52	Four Points Technology, L.L.C. Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) Treasury (Department of the Treasury)	$549,513,013	0.3%	Rank history: #41 in FY2021, #47 in FY2023, #36 in FY2024 and #39 in FY2025; down 11 since FY2021.
53	Cerner Corporation 3 awardees, including Oracle Health Government Services, Inc. and Cerner Federal Solutions LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$531,944,128	0.3%	Rank history: #28 in FY2021 and not on the FY2023–FY2025 lists; down 25 since FY2021.
54	Governmentcio LLC 7 awardees, including Salient Crgt, Inc., Govcio, LLC and Advanced Technology Systems, Inc. Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) DOJ (Department of Justice)	$529,146,196	0.2%	Rank history: #96 in FY2021 and not on the FY2023–FY2025 lists; up 42 since FY2021.
55	PAE Government Services Inc. 12 awardees, including Macfadden & Associates, Inc., PAE National Security Solutions LLC and PAE Professional Services, LLC Top agencies DOS (Department of State) USAID (US Agency for International Development) DOJ (Department of Justice)	$511,151,571	0.2%	Rank history: #48 in FY2021, #75 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2021.
56	Microsoft Corporation 3 awardees, including Github Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DISA (Defense Information Systems Agency)	$470,750,980	0.2%	Rank history: #57 in FY2021, #60 in FY2023, #61 in FY2024 and #73 in FY2025; up 1 since FY2021.
57	Oasis Systems, LLC 2 awardees Top agencies USAF (Department of the Air Force) DOT (Department of Transportation) Navy (Department of the Navy)	$448,711,617	0.2%	Rank history: #77 in FY2021 and not on the FY2023–FY2025 lists; up 20 since FY2021.
58	Nana Regional Corporation Inc 16 awardees, including Affigent, LLC, Rivertech LLC and Tuvli LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$445,378,965	0.2%	Rank history: #32 in FY2021 and not on the FY2023–FY2025 lists; down 26 since FY2021.
59	Research Triangle Institute 2 awardees, including International Resources Group Ltd. Top agencies HHS (Department of Health and Human Services) USAID (US Agency for International Development) ED (Department of Education)	$438,048,036	0.2%	Rank history: #56 in FY2021, #58 in FY2023, #49 in FY2024 and #82 in FY2025; down 3 since FY2021.
60	Kpmg L.L.P. 2 awardees Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) Army (Department of the Army)	$431,140,852	0.2%	Rank history: #61 in FY2021, #64 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2021.
61	Fluor Marine Propulsion, LLC Top agencies DOE (Department of Energy)	$428,889,352	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
62	Smartronix LLC 3 awardees, including Datastrong, LLC and C2Sconsultinggroup LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) VA (Department of Veterans Affairs)	$428,305,322	0.2%	Rank history: #70 in FY2021, #73 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2021.
63	On Assignment, Inc. 7 awardees, including ECS Federal, LLC, Indrasoft Inc. and Enterprise Resource Performance, LLC Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) Army (Department of the Army)	$424,274,051	0.2%	Rank history: #50 in FY2021, #52 in FY2023 and not on the FY2024–FY2025 lists; down 13 since FY2021.
64	ABT Global LLC 2 awardees Top agencies USAID (US Agency for International Development) HHS (Department of Health and Human Services) EPA (Environmental Protection Agency)	$420,168,688	0.2%	Rank history: #54 in FY2021, #85 in FY2023 and not on the FY2024–FY2025 lists; down 10 since FY2021.
65	Oak Ridge Associated Universities, Incorporated Top agencies DOE (Department of Energy) HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration)	$398,890,842	0.2%	Rank history: #72 in FY2021, #70 in FY2023, #65 in FY2024 and #93 in FY2025; up 7 since FY2021.
66	The Interpublic Group of Companies Inc 5 awardees, including IPG Dxtra, Inc., True North Communications Inc. and Mullenlowe US Inc. Top agencies HHS (Department of Health and Human Services) DHRA (Defense Human Resources Activity) DOS (Department of State)	$388,686,737	0.2%	Rank history: #55 in FY2021, #71 in FY2023, #86 in FY2024 and not on the FY2025 list; down 11 since FY2021.
67	V3Gate, LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) USAF (Department of the Air Force)	$386,132,775	0.2%	Rank history: #86 in FY2021, #53 in FY2023, #48 in FY2024 and #43 in FY2025; up 19 since FY2021.
68	New TECH Solutions, Inc. Top agencies DOS (Department of State) Navy (Department of the Navy) HHS (Department of Health and Human Services)	$381,958,060	0.2%	Rank history: #66 in FY2021, #68 in FY2023, #63 in FY2024 and #55 in FY2025; down 2 since FY2021.
69	Applied Research Associates, Inc. 4 awardees, including Neya Systems LLC Top agencies DTRA (Defense Threat Reduction Agency) Army (Department of the Army) DHS (Department of Homeland Security)	$377,494,644	0.2%	Rank history: #79 in FY2021, #56 in FY2023, #62 in FY2024 and #64 in FY2025; up 10 since FY2021.
70	Koniag, Inc. 9 awardees, including Tuknik Government Services LLC, Eagle Harbor Solutions LLC and Kadiak LLC Top agencies DOS (Department of State) DOJ (Department of Justice) DISA (Defense Information Systems Agency)	$371,709,186	0.2%	Rank history: #83 in FY2021, #86 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2021.
71	Noblis, Inc. 3 awardees, including Noblis MSD LLC Top agencies DOT (Department of Transportation) DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy)	$367,940,583	0.2%	Rank history: #99 in FY2021, #74 in FY2023, #77 in FY2024 and #86 in FY2025; up 28 since FY2021.
72	DAI Global LLC 2 awardees Top agencies USAID (US Agency for International Development)	$361,991,403	0.2%	Rank history: #88 in FY2021, #67 in FY2023, #60 in FY2024 and not on the FY2025 list; up 16 since FY2021.
73	Aerojet Rocketdyne Holdings, Inc. 5 awardees, including Aerojet Rocketdyne of DE, Inc. and Aerojet Rocketdyne, Inc. Top agencies NASA (National Aeronautics and Space Administration) MDA (DOD Missile Defense Agency) DARPA (Defense Advanced Research Projects Agency)	$361,856,477	0.2%	Rank history: #51 in FY2021, #82 in FY2023 and not on the FY2024–FY2025 lists; down 22 since FY2021.
74	World Wide Technology Holding Co. Inc. 2 awardees, including World Wide Technology LLC and Asynchrony Solutions, LLC Top agencies Army (Department of the Army) DOJ (Department of Justice) Navy (Department of the Navy)	$361,447,111	0.2%	Rank history: #87 in FY2021 and not on the FY2023–FY2025 lists; up 13 since FY2021.
75	Nippon Telegraph and Telephone Corporation 5 awardees, including NTT Data Federal Services, Inc., NTT Data Services Federal Government, LLC and NTT Docomo, Inc. Top agencies DOJ (Department of Justice) USAID (US Agency for International Development) HHS (Department of Health and Human Services)	$354,256,962	0.2%	Rank history: #64 in FY2021 and not on the FY2023–FY2025 lists; down 11 since FY2021.
76	Minburn Technology Group, LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) USDA (Department of Agriculture)	$353,283,828	0.2%	Rank history: #63 in FY2021, #51 in FY2023, #43 in FY2024 and #48 in FY2025; down 13 since FY2021.
77	H.i.g. Capital Management Inc. 5 awardees, including Iron Bow Technologies, LLC, Empower AI, Inc. and Symplicity Corporation Top agencies USAF (Department of the Air Force) GSA (General Services Administration) OSD (Office of the Secretary of Defense)	$347,182,701	0.2%	Rank history: not on the FY2021 list, #62 in FY2023, #91 in FY2024 and not on the FY2025 list; up 32 since FY2021.
78	Westat, Inc. Top agencies HHS (Department of Health and Human Services) ED (Department of Education) DOL (Department of Labor)	$337,895,317	0.2%	Rank history: #76 in FY2021, not on the FY2023 list, #75 in FY2024 and not on the FY2025 list; down 2 since FY2021.
79	Aaski Technology Inc. 6 awardees, including Mag DS Corp, Remotely Piloted Solutions, L.L.C. and Ausley Associates, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$337,830,168	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 33 since FY2021.
80	Octo Consulting Group Inc. 4 awardees, including B 3 Group, LLC, Sevatec LLC and Connexta, LLC Top agencies VA (Department of Veterans Affairs) GSA (General Services Administration) DHS (Department of Homeland Security)	$329,640,283	0.2%	Rank history: not on the FY2021 list, #78 in FY2023 and not on the FY2024–FY2025 lists; up 57 since FY2021.
81	DCS Corporation 3 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$320,604,337	0.2%	Rank history: #69 in FY2021, #79 in FY2023, #79 in FY2024 and #71 in FY2025; down 12 since FY2021.
82	Mythics, LLC 2 awardees, including Emergent, LLC Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency) VA (Department of Veterans Affairs)	$314,356,822	0.1%	Rank history: #80 in FY2021, #77 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2021.
83	Maximus Inc. 8 awardees, including Maximus Federal Services, Inc., Maximus Federal Technology Solutions, LLC and Q2 Administrators, LLC Top agencies HHS (Department of Health and Human Services) Treasury (Department of the Treasury) DOE (Department of Energy)	$311,820,157	0.1%	Rank history: #94 in FY2021, #90 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2021.
84	Tista Science and Technology Corporation Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) Treasury (Department of the Treasury)	$309,966,477	0.1%	Rank history: #84 in FY2021 and not on the FY2023–FY2025 lists; unchanged since FY2021.
85	Alion Science and Technology Corporation 3 awardees, including HII Mission Technologies Corp Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$308,297,401	0.1%	Rank history: #29 in FY2021, #26 in FY2023 and not on the FY2024–FY2025 lists; down 56 since FY2021.
86	Booz Allen Hamilton Inc. Top agencies VA (Department of Veterans Affairs)	$306,416,188	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
87	Hdr, Inc. 44 awardees, including HDR Environmental, Operations and Construction, Inc., HDR Engineering, Inc. and HDR Architecture, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$303,817,249	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 26 since FY2021.
88	Bechtel Corp 4 awardees, including National Aerospace Solutions, LLC, Kwajalein Range Services, LLC and Bechtel National, Inc. Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service) Army (Department of the Army)	$300,136,383	0.1%	Rank history: not on the FY2021 list, #69 in FY2023 and not on the FY2024–FY2025 lists; up 23 since FY2021.
89	Credence Management Solutions Limited Liability Company Top agencies USAF (Department of the Air Force) USAID (US Agency for International Development) DLA (Defense Logistics Agency)	$297,678,795	0.1%	Rank history: #93 in FY2021, #88 in FY2023, #53 in FY2024 and #81 in FY2025; up 4 since FY2021.
90	Amgen Inc. 2 awardees, including Amgen USA Inc. Top agencies HHS (Department of Health and Human Services)	$292,728,744	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
91	Cognosante Holdings, LLC 3 awardees, including Cognosante MVH LLC, Cognosante, LLC and Cognosante Cds, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) SSA (Social Security Administration)	$289,668,760	0.1%	Rank history: not on the FY2021 list, #98 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2021.
92	General Atomic Technologies Corporation 3 awardees, including General Atomics Aeronautical Systems, Inc. and General Atomics Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$285,243,918	0.1%	Rank history: #67 in FY2021, #66 in FY2023 and not on the FY2024–FY2025 lists; down 25 since FY2021.
93	Government Acquisitions LLC Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) DOS (Department of State)	$280,869,975	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 34 since FY2021.
94	Riverside Research Institute 3 awardees, including Applied Research Solutions, Inc. Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service) DARPA (Defense Advanced Research Projects Agency)	$272,482,004	0.1%	Rank history: #91 in FY2021, #95 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2021.
95	CDW Corporation 2 awardees, including CDW Government LLC and Sirius Federal LLC Top agencies DOS (Department of State) DOT (Department of Transportation) DHA (Defense Health Agency)	$270,245,742	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 33 since FY2021.
96	Colossal Contracting LLC Top agencies VA (Department of Veterans Affairs) DISA (Defense Information Systems Agency) Commerce (Department of Commerce)	$270,245,601	0.1%	Rank history: #59 in FY2021 and not on the FY2023–FY2025 lists; down 37 since FY2021.
97	Carahsoft Technology Corp Top agencies USDA (Department of Agriculture) DOE (Department of Energy) USAF (Department of the Air Force)	$269,420,555	0.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #67 in FY2024 and #59 in FY2025; up 38 since FY2021.
98	The Rand Corporation Top agencies OSD (Office of the Secretary of Defense) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$257,699,022	0.1%	Rank history: #98 in FY2021, #99 in FY2023, #97 in FY2024 and not on the FY2025 list; unchanged since FY2021.
99	Mathematica Inc 2 awardees Top agencies HHS (Department of Health and Human Services) ED (Department of Education) SSA (Social Security Administration)	$254,537,385	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 6 since FY2021.
100	Linquest Corporation 3 awardees, including The Perduco Group, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$253,035,698	0.1%	Rank history: #89 in FY2021, #89 in FY2023, #85 in FY2024 and #70 in FY2025; down 11 since FY2021.

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100 of 21,415 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 541

Code	Net obligations	Largest contractor
5415 Computer Systems Design and Related Services	$66,194,926,286	Leidos Holdings, Inc.
5417 Scientific Research and Development Services	$54,935,845,957	Lockheed Martin Corporation
5413 Architectural, Engineering, and Related Services	$44,631,478,890	General Dynamics Corporation
5416 Management, Scientific, and Technical Consulting Services	$20,240,985,524	Chemonics International, Inc.
5419 Other Professional, Scientific, and Technical Services	$12,454,355,402	Battelle Memorial Institute
5412 Accounting, Tax Preparation, Bookkeeping, and Payroll Services	$1,864,574,786	Ernst & Young LLP
5418 Advertising, Public Relations, and Related Services	$1,664,015,096	Omnicom Group Inc.
5411 Legal Services	$764,896,260	Vera Institute of Justice, Inc.
5414 Specialized Design Services	$62,675,212	DMD Group Inc.

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 $212 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 2022 ran Oct 1, 2021 – Sep 30, 2022. 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 FY2021. "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 FY2021 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.

Quick answers

Who were the top 10 NAICS 541 contractors in FY2022?

1. General Dynamics Corporation ($7.39B), 2. Lockheed Martin Corporation ($6.68B), 3. Leidos Holdings, Inc. ($6.44B), 4. Booz Allen Hamilton Holding Corporation ($5.99B), 5. RTX Corporation ($4.23B), 6. Science Applications International Corporation ($4.04B), 7. Northrop Grumman Corporation ($3.99B), 8. Fluor Corporation ($3.09B), 9. CACI International Inc. ($2.85B), 10. California Institute of Technology ($2.61B).

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