Top 100 Contractors in NAICS 541: Professional, Scientific, and Technical Services, FY2023

Name: Top 100 Contractors in NAICS 541: Professional, Scientific, and Technical Services, FY2023
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Code page on GovTribe

The top 10 won 23% of FY2023 NAICS 541 contract dollars

Contract obligations: $229,548,673,997 Net of deobligations, by contracts coded NAICS 541 or a code under it
Contractors: 22,139 Parent companies with an obligation
Largest contractor: General Dynamics Corporation $9.48 billion, 3.9% 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 40 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) HHS (Department of Health and Human Services)	$9,481,816,815	3.9%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2024 and #1 in FY2025; unchanged since FY2022.
2	Lockheed Martin Corporation 46 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$8,349,204,448	3.5%	Rank history: #2 in FY2021, #2 in FY2022, #3 in FY2024 and #2 in FY2025; unchanged since FY2022.
3	Booz Allen Hamilton Holding Corporation 11 awardees, including Booz Allen Hamilton Inc., Liberty It Solutions LLC and Riverside Engineering LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$7,454,853,626	3.1%	Rank history: #3 in FY2021, #4 in FY2022, #2 in FY2024 and #3 in FY2025; up 1 since FY2022.
4	Leidos Holdings, Inc. 33 awardees, including Leidos, Inc. and Leidos Biomedical Research Inc. Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) Army (Department of the Army)	$6,710,698,413	2.8%	Rank history: #4 in FY2021, #3 in FY2022, #4 in FY2024 and #4 in FY2025; down 1 since FY2022.
5	Northrop Grumman Corporation 68 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency) Navy (Department of the Navy)	$4,939,839,529	2.1%	Rank history: #5 in FY2021, #7 in FY2022, #6 in FY2024 and #6 in FY2025; up 2 since FY2022.
6	Science Applications International Corporation 16 awardees, including Forfeiture Support Associates LLC and Halfaker and Associates, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$4,477,362,438	1.9%	Rank history: #7 in FY2021, #6 in FY2022, #5 in FY2024 and #7 in FY2025; unchanged since FY2022.
7	Fluor Corporation 3 awardees, including Fluor Marine Propulsion, LLC, Fluor Enterprises, Inc. and Fluor Federal Services Inc. Top agencies DOE (Department of Energy) Navy (Department of the Navy) DHS (Department of Homeland Security)	$3,670,868,947	1.5%	Rank history: #8 in FY2021, #8 in FY2022, #7 in FY2024 and #8 in FY2025; up 1 since FY2022.
8	CACI International Inc. 31 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)	$3,666,095,153	1.5%	Rank history: #9 in FY2021, #9 in FY2022, #9 in FY2024 and #5 in FY2025; up 1 since FY2022.
9	RTX Corporation 98 awardees, including Raytheon Company and Rockwell Collins, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$3,363,440,730	1.4%	Rank history: #6 in FY2021, #5 in FY2022, #11 in FY2024 and #11 in FY2025; down 4 since FY2022.
10	The Mitre Corporation 3 awardees Top agencies USAF (Department of the Air Force) AAFES (Department of Defense Army and Air Force Exchange Service) OSD (Office of the Secretary of Defense)	$2,919,087,587	1.2%	Rank history: #11 in FY2021, #11 in FY2022, #14 in FY2024 and #18 in FY2025; up 1 since FY2022.
11	HP Enterprise Services LLC 18 awardees, including Peraton Inc., Peraton Enterprise Solutions LLC and Peraton Technology Services Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) DOS (Department of State)	$2,833,205,395	1.2%	Rank history: #34 in FY2021, #13 in FY2022, #52 in FY2024 and not on the FY2025 list; up 2 since FY2022.
12	California Institute of Technology 2 awardees Top agencies NASA (National Aeronautics and Space Administration) DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services)	$2,793,336,193	1.2%	Rank history: #13 in FY2021, #10 in FY2022, #12 in FY2024 and #14 in FY2025; down 2 since FY2022.
13	Accenture Inc. 2 awardees, including Accenture Federal Services LLC and ASM Research, LLC Top agencies DOE (Department of Energy) Army (Department of the Army) Treasury (Department of the Treasury)	$2,662,706,122	1.1%	Rank history: not on the FY2021 list, #34 in FY2022 and not on the FY2024–FY2025 lists; up 21 since FY2022.
14	Deloitte LLP 6 awardees, including Deloitte Consulting LLP, Deloitte & Touche LLP and Deloitte Financial Advisory Services LLP Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) Treasury (Department of the Treasury)	$2,351,520,040	1.0%	Rank history: #10 in FY2021, #12 in FY2022 and not on the FY2024–FY2025 lists; down 2 since FY2022.
15	Battelle Energy Alliance, LLC 2 awardees Top agencies DOE (Department of Energy) USAF (Department of the Air Force)	$2,234,871,162	0.9%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2024 and not on the FY2025 list; up 141 since FY2022.
16	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) USAF (Department of the Air Force)	$2,029,664,904	0.8%	Rank history: #20 in FY2021, #19 in FY2022, #78 in FY2024 and not on the FY2025 list; up 3 since FY2022.
17	Analytic Services Inc. 3 awardees, including Advanced Technology International and Professional, Acquisition, and Technical Services, Inc. Top agencies HHS (Department of Health and Human Services) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$1,849,858,925	0.8%	Rank history: not on the FY2021–FY2022 lists, #25 in FY2024 and not on the FY2025 list; up 215 since FY2022.
18	BAE Systems PLC 24 awardees, including BAE Systems Technology Solutions & Services Inc., BAE Systems Land & Armaments L.P. and BAE Systems Information & Electronic Systems Integration Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$1,808,218,372	0.8%	Rank history: #31 in FY2021, #25 in FY2022, #17 in FY2024 and #19 in FY2025; up 7 since FY2022.
19	L3Harris Technologies, Inc. 49 awardees, including L3Harris Technologies Integrated Systems L.P., L3 Technologies, Inc. and L3Harris Interstate Electronics Corporation Top agencies USAF (Department of the Air Force) Commerce (Department of Commerce) Navy (Department of the Navy)	$1,697,766,066	0.7%	Rank history: #17 in FY2021, #18 in FY2022, #19 in FY2024 and #21 in FY2025; down 1 since FY2022.
20	The Boeing Company 36 awardees, including Insitu, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$1,685,189,896	0.7%	Rank history: #12 in FY2021, #16 in FY2022, #16 in FY2024 and #23 in FY2025; down 4 since FY2022.
21	Jacobs Engineering Group Inc. 42 awardees, including Amentum Technology, Inc., Ch2M Hill, Inc. and The Keyw Corporation Top agencies MDA (DOD Missile Defense Agency) NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$1,660,009,058	0.7%	Rank history: #15 in FY2021, #15 in FY2022, #84 in FY2024 and not on the FY2025 list; down 6 since FY2022.
22	Kbr, Inc. 11 awardees, including KBR Wyle Services, LLC and Dependable Global Solutions, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$1,486,198,486	0.6%	Rank history: #21 in FY2021, #24 in FY2022, #76 in FY2024 and not on the FY2025 list; up 2 since FY2022.
23	Massachusetts Institute of Technology 2 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) HHS (Department of Health and Human Services)	$1,376,535,907	0.6%	Rank history: #23 in FY2021, #23 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
24	Alliance for Energy Innovation, LLC Top agencies DOE (Department of Energy) USAID (US Agency for International Development) OSD (Office of the Secretary of Defense)	$1,288,629,762	0.5%	Rank history: #44 in FY2021, #38 in FY2022, #26 in FY2024 and #35 in FY2025; up 14 since FY2022.
25	Deloitte Consulting LLP 2 awardees Top agencies Treasury (Department of the Treasury) HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$1,288,046,799	0.5%	Rank history: not on the FY2021 list, #31 in FY2022 and not on the FY2024–FY2025 lists; up 6 since FY2022.
26	Alion Science and Technology Corporation 6 awardees, including HII Mission Technologies Corp Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$1,279,515,944	0.5%	Rank history: #29 in FY2021, #85 in FY2022 and not on the FY2024–FY2025 lists; up 59 since FY2022.
27	Chemonics International, Inc. Top agencies USAID (US Agency for International Development)	$1,276,827,776	0.5%	Rank history: #18 in FY2021, #20 in FY2022, #21 in FY2024 and #29 in FY2025; down 7 since FY2022.
28	The Aerospace Corporation Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) DOE (Department of Energy)	$1,270,539,037	0.5%	Rank history: #24 in FY2021, #26 in FY2022, #23 in FY2024 and #25 in FY2025; down 2 since FY2022.
29	Parsons Corporation 16 awardees, including Parsons Government Services Inc., Ptsi Managed Services Inc. and Space Ground System Solutions, Inc. Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency) Navy (Department of the Navy)	$1,234,872,640	0.5%	Rank history: #27 in FY2021, #27 in FY2022, #27 in FY2024 and #22 in FY2025; down 2 since FY2022.
30	Deployed Resources LLC Top agencies DHS (Department of Homeland Security)	$1,080,428,674	0.4%	Rank history: #65 in FY2021, #37 in FY2022, #20 in FY2024 and #63 in FY2025; up 7 since FY2022.
31	Omnicom Group Inc. 6 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)	$998,942,296	0.4%	Rank history: #49 in FY2021, #51 in FY2022 and not on the FY2024–FY2025 lists; up 20 since FY2022.
32	FCN, Inc. Top agencies Treasury (Department of the Treasury) USAF (Department of the Air Force) DHA (Defense Health Agency)	$992,131,264	0.4%	Rank history: #42 in FY2021, #41 in FY2022, #33 in FY2024 and #34 in FY2025; up 9 since FY2022.
33	AECOM 36 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)	$968,752,183	0.4%	Rank history: #45 in FY2021, #39 in FY2022, #68 in FY2024 and not on the FY2025 list; up 6 since FY2022.
34	CGI Technologies and Solutions Inc. 3 awardees, including CGI Federal Inc. Top agencies DOS (Department of State) DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$961,453,245	0.4%	Rank history: #30 in FY2021, #29 in FY2022, #70 in FY2024 and not on the FY2025 list; down 5 since FY2022.
35	Space Exploration Technologies Corp. 2 awardees Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$939,814,690	0.4%	Rank history: #53 in FY2021, #33 in FY2022, #46 in FY2024 and #90 in FY2025; down 2 since FY2022.
36	International Business Machines Corporation 9 awardees, including Merge Healthcare Solutions Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) Army (Department of the Army)	$933,448,590	0.4%	Rank history: #26 in FY2021, #35 in FY2022, #28 in FY2024 and #32 in FY2025; down 1 since FY2022.
37	Mantech International Corporation 10 awardees, including Mantech Advanced Systems International, Inc., Mantech SRS Technologies, Inc. and Tapestry Technologies, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) Army (Department of the Army)	$831,728,532	0.3%	Rank history: #25 in FY2021, #22 in FY2022, #45 in FY2024 and #37 in FY2025; down 15 since FY2022.
38	Tetra Tech, Inc. 44 awardees, including Ard, Inc., Tetra TECH ES, Inc. and Advanced Management Technology, Inc. Top agencies USAID (US Agency for International Development) EPA (Environmental Protection Agency) USAF (Department of the Air Force)	$809,826,242	0.3%	Rank history: #38 in FY2021, #44 in FY2022, #37 in FY2024 and #51 in FY2025; up 6 since FY2022.
39	Georgia TECH Research Corp 2 awardees, including Georgia TECH Applied Research Corp Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$798,637,845	0.3%	Rank history: #39 in FY2021, #42 in FY2022 and not on the FY2024–FY2025 lists; up 3 since FY2022.
40	Brookhaven Science Associates LLC Top agencies DOE (Department of Energy)	$789,434,033	0.3%	Rank history: #36 in FY2021, #30 in FY2022, #39 in FY2024 and #38 in FY2025; down 10 since FY2022.
41	Thundercat Technology LLC Top agencies DOJ (Department of Justice) DOS (Department of State) DHS (Department of Homeland Security)	$789,222,735	0.3%	Rank history: #47 in FY2021, #45 in FY2022, #40 in FY2024 and #36 in FY2025; up 4 since FY2022.
42	Sierra Nevada Company, LLC 5 awardees, including Sierra Space Corp and Kutta Technologies, LLC Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) NASA (National Aeronautics and Space Administration)	$783,893,608	0.3%	Rank history: #37 in FY2021, #47 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
43	Huntington Ingalls Industries, Inc. 10 awardees, including HII Mission Technologies Corp, HII Fleet Support Group LLC and HII Technical Solutions Corporation Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) Navy (Department of the Navy)	$782,250,155	0.3%	Rank history: #78 in FY2021, #28 in FY2022, #15 in FY2024 and #17 in FY2025; down 15 since FY2022.
44	B.l. Harbert Holdings, L.L.C. Through BL Harbert International LLC Top agencies DOS (Department of State)	$780,559,560	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
45	Guidehouse Inc. 2 awardees Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security) DOS (Department of State)	$777,997,199	0.3%	Rank history: #35 in FY2021, #43 in FY2022 and not on the FY2024–FY2025 lists; down 2 since FY2022.
46	Oracle Health Government Services Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$742,941,604	0.3%	Rank history: not on the FY2021–FY2022 lists, #34 in FY2024 and #33 in FY2025; up 287 since FY2022.
47	Four Points Technology, L.L.C. Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) SSA (Social Security Administration)	$724,322,451	0.3%	Rank history: #41 in FY2021, #52 in FY2022, #36 in FY2024 and #39 in FY2025; up 5 since FY2022.
48	Battelle Memorial Institute 5 awardees, including Battelle Savannah River Alliance, LLC, Battelle National Biodefense Institute, LLC and Seebyte Limited Top agencies DOE (Department of Energy) USAF (Department of the Air Force) Army (Department of the Army)	$691,762,869	0.3%	Rank history: #16 in FY2021, #14 in FY2022, #22 in FY2024 and #15 in FY2025; down 34 since FY2022.
49	Torch Technologies Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$674,989,021	0.3%	Rank history: #52 in FY2021, #49 in FY2022, #47 in FY2024 and #46 in FY2025; unchanged since FY2022.
50	ICF International, Inc. 4 awardees, including ICF Incorporated, L.L.C., Creative Systems and Consulting L.L.C. and ICF Macro Inc. Top agencies HHS (Department of Health and Human Services) USAID (US Agency for International Development) EPA (Environmental Protection Agency)	$665,820,533	0.3%	Rank history: #40 in FY2021, #46 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
51	Minburn Technology Group, LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) USDA (Department of Agriculture)	$616,608,896	0.3%	Rank history: #63 in FY2021, #76 in FY2022, #43 in FY2024 and #48 in FY2025; up 25 since FY2022.
52	On Assignment, Inc. 7 awardees, including ECS Federal, LLC, Iron Vine Security LLC and Enterprise Resource Performance, LLC Top agencies DHS (Department of Homeland Security) Army (Department of the Army) DOJ (Department of Justice)	$597,385,548	0.2%	Rank history: #50 in FY2021, #63 in FY2022 and not on the FY2024–FY2025 lists; up 11 since FY2022.
53	V3Gate, LLC Top agencies VA (Department of Veterans Affairs) DOS (Department of State) DOJ (Department of Justice)	$578,410,566	0.2%	Rank history: #86 in FY2021, #67 in FY2022, #48 in FY2024 and #43 in FY2025; up 14 since FY2022.
54	Arctic Slope Regional Corporation 20 awardees, including Netcentric Technology, LLC, Asrc Federal System Solutions LLC and Inuteq, LLC Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) DOT (Department of Transportation)	$547,176,395	0.2%	Rank history: #46 in FY2021, #50 in FY2022, #56 in FY2024 and #28 in FY2025; down 4 since FY2022.
55	Amentum Services, Inc. 2 awardees Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) OSD (Office of the Secretary of Defense)	$522,581,126	0.2%	Rank history: #43 in FY2021, #48 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
56	Applied Research Associates, Inc. 3 awardees, including Neya Systems LLC Top agencies DTRA (Defense Threat Reduction Agency) Army (Department of the Army) USAF (Department of the Air Force)	$509,478,307	0.2%	Rank history: #79 in FY2021, #69 in FY2022, #62 in FY2024 and #64 in FY2025; up 13 since FY2022.
57	Serco North America (Holdings) Inc 5 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)	$501,399,694	0.2%	Rank history: #33 in FY2021, #32 in FY2022 and not on the FY2024–FY2025 lists; down 25 since FY2022.
58	Research Triangle Institute 2 awardees Top agencies HHS (Department of Health and Human Services) USAID (US Agency for International Development) ED (Department of Education)	$500,322,921	0.2%	Rank history: #56 in FY2021, #59 in FY2022, #49 in FY2024 and #82 in FY2025; up 1 since FY2022.
59	Advanced Technology Systems Inc. 7 awardees, including Salient Crgt, Inc., Salient Federal-Sgis Inc. and Guident Technologies, Inc. Top agencies DOJ (Department of Justice) USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$486,709,674	0.2%	Rank history: #75 in FY2021, not on the FY2022 list, #94 in FY2024 and not on the FY2025 list; up 220 since FY2022.
60	Microsoft Corporation 3 awardees, including Github Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$479,206,571	0.2%	Rank history: #57 in FY2021, #56 in FY2022, #61 in FY2024 and #73 in FY2025; down 4 since FY2022.
61	Dell Federal Systems L.P. 5 awardees, including Vmware LLC, Dell Marketing L.P. and EMC Corporation Top agencies DHS (Department of Homeland Security) Treasury (Department of the Treasury) Army (Department of the Army)	$475,316,688	0.2%	Rank history: #19 in FY2021, #36 in FY2022 and not on the FY2024–FY2025 lists; down 25 since FY2022.
62	H.i.g. Capital Management Inc. 3 awardees, including Iron Bow Technologies, LLC and Empower AI, Inc. Top agencies USAF (Department of the Air Force) DISA (Defense Information Systems Agency) GSA (General Services Administration)	$470,924,198	0.2%	Rank history: not on the FY2021 list, #77 in FY2022, #91 in FY2024 and not on the FY2025 list; up 15 since FY2022.
63	Ernst & Young LLP Top agencies Army (Department of the Army) HUD (Department of Housing and Urban Development) USAF (Department of the Air Force)	$467,710,389	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 71 since FY2022.
64	Kpmg L.L.P. 2 awardees Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$459,826,027	0.2%	Rank history: #61 in FY2021, #60 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
65	Aevex Aerospace, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$457,107,233	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #47 in FY2025; up 114 since FY2022.
66	General Atomic Technologies Corporation 4 awardees, including General Atomics Aeronautical Systems, Inc. and General Atomics Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$451,919,887	0.2%	Rank history: #67 in FY2021, #92 in FY2022 and not on the FY2024–FY2025 lists; up 26 since FY2022.
67	DAI Global LLC Top agencies USAID (US Agency for International Development)	$448,895,741	0.2%	Rank history: #88 in FY2021, #72 in FY2022, #60 in FY2024 and not on the FY2025 list; up 5 since FY2022.
68	New TECH Solutions, Inc. Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) Navy (Department of the Navy)	$442,448,423	0.2%	Rank history: #66 in FY2021, #68 in FY2022, #63 in FY2024 and #55 in FY2025; unchanged since FY2022.
69	Bechtel Corp 2 awardees, including National Aerospace Solutions, LLC Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$442,432,867	0.2%	Rank history: not on the FY2021 list, #88 in FY2022 and not on the FY2024–FY2025 lists; up 19 since FY2022.
70	Oak Ridge Associated Universities, Incorporated Top agencies DOE (Department of Energy) HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration)	$437,250,743	0.2%	Rank history: #72 in FY2021, #65 in FY2022, #65 in FY2024 and #93 in FY2025; down 5 since FY2022.
71	The Interpublic Group of Companies Inc 5 awardees, including IPG Dxtra, Inc. and Mullenlowe US Inc. Top agencies HHS (Department of Health and Human Services) DHRA (Defense Human Resources Activity)	$437,171,402	0.2%	Rank history: #55 in FY2021, #66 in FY2022, #86 in FY2024 and not on the FY2025 list; down 5 since FY2022.
72	Blue Origin Washington, LLC Top agencies NASA (National Aeronautics and Space Administration)	$425,009,984	0.2%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2024 and #41 in FY2025; new.
73	Smartronix LLC 3 awardees, including Datastrong, LLC and C2Sconsultinggroup LLC Top agencies Navy (Department of the Navy) DOI (Department of the Interior) CFTC (Commodity Futures Trading Commission)	$423,012,645	0.2%	Rank history: #70 in FY2021, #62 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
74	Noblis, Inc. 2 awardees, including Noblis MSD LLC Top agencies Navy (Department of the Navy) DOT (Department of Transportation) DHS (Department of Homeland Security)	$406,916,297	0.2%	Rank history: #99 in FY2021, #71 in FY2022, #77 in FY2024 and #86 in FY2025; down 3 since FY2022.
75	PAE Government Services Inc. 10 awardees, including Macfadden & Associates, Inc., PAE Professional Services, LLC and Centra Technology, Inc. Top agencies DOS (Department of State) DOJ (Department of Justice) DHS (Department of Homeland Security)	$394,777,850	0.2%	Rank history: #48 in FY2021, #55 in FY2022 and not on the FY2024–FY2025 lists; down 20 since FY2022.
76	Technical Resources International, Inc. Top agencies HHS (Department of Health and Human Services)	$383,137,481	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 228 since FY2022.
77	Mythics, LLC 2 awardees, including Emergent, LLC Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$381,511,972	0.2%	Rank history: #80 in FY2021, #82 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
78	Octo Consulting Group Inc. 4 awardees, including B 3 Group, LLC and Sevatec LLC Top agencies VA (Department of Veterans Affairs) GSA (General Services Administration) HHS (Department of Health and Human Services)	$376,466,364	0.2%	Rank history: not on the FY2021 list, #80 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
79	DCS Corporation 2 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$368,621,488	0.2%	Rank history: #69 in FY2021, #81 in FY2022, #79 in FY2024 and #71 in FY2025; up 2 since FY2022.
80	Serco Inc 3 awardees, including Serco-Ips Corporation Top agencies Navy (Department of the Navy) DOL (Department of Labor) Army (Department of the Army)	$365,606,951	0.2%	Rank history: not on the FY2021–FY2022 lists, #31 in FY2024 and #31 in FY2025; new.
81	The Boston Consulting Group Inc 2 awardees, including BCG Federal Corp. Top agencies DHA (Defense Health Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$364,404,197	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 54 since FY2022.
82	Aerojet Rocketdyne Holdings, Inc. 5 awardees, including Aerojet Rocketdyne of DE, Inc. and Aerojet Rocketdyne, Inc. Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$361,974,499	0.2%	Rank history: #51 in FY2021, #73 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
83	Icon Government and Public Health Solutions Inc. Top agencies HHS (Department of Health and Human Services)	$358,640,063	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
84	Four LLC Top agencies Treasury (Department of the Treasury) DHS (Department of Homeland Security) Navy (Department of the Navy)	$351,696,800	0.1%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2024 and #96 in FY2025; up 28 since FY2022.
85	ABT Global LLC 2 awardees Top agencies USAID (US Agency for International Development) HHS (Department of Health and Human Services) DOL (Department of Labor)	$348,988,729	0.1%	Rank history: #54 in FY2021, #64 in FY2022 and not on the FY2024–FY2025 lists; down 21 since FY2022.
86	Koniag, Inc. 9 awardees, including Tuknik Government Services LLC, Eagle Harbor Solutions LLC and Kadiak LLC Top agencies DOS (Department of State) HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$348,940,151	0.1%	Rank history: #83 in FY2021, #70 in FY2022 and not on the FY2024–FY2025 lists; down 16 since FY2022.
87	Allucent Government Services (Us) LLC Top agencies HHS (Department of Health and Human Services)	$343,565,823	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
88	Credence Management Solutions Limited Liability Company Top agencies USAID (US Agency for International Development) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$343,273,193	0.1%	Rank history: #93 in FY2021, #89 in FY2022, #53 in FY2024 and #81 in FY2025; up 1 since FY2022.
89	Linquest Corporation 3 awardees, including The Perduco Group, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$337,073,877	0.1%	Rank history: #89 in FY2021, #100 in FY2022, #85 in FY2024 and #70 in FY2025; up 11 since FY2022.
90	Maximus Inc. 8 awardees, including Maximus Federal Services, Inc., Maximus Federal Technology Solutions, LLC and Q2 Administrators, LLC Top agencies Treasury (Department of the Treasury) HHS (Department of Health and Human Services) SEC (Securities and Exchange Commission)	$335,956,501	0.1%	Rank history: #94 in FY2021, #83 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
91	The Charles Stark Draper Laboratory, Inc. Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$330,253,045	0.1%	Rank history: not on the FY2021–FY2022 lists, #50 in FY2024 and #58 in FY2025; up 25 since FY2022.
92	Scientific Research Corporation Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$329,390,982	0.1%	Rank history: #100 in FY2021, not on the FY2022 list, #72 in FY2024 and #60 in FY2025; up 10 since FY2022.
93	Regeneron Pharmaceuticals Inc. Top agencies HHS (Department of Health and Human Services)	$326,475,488	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
94	Countertrade Products, Inc. Top agencies Army (Department of the Army) DHA (Defense Health Agency) USAF (Department of the Air Force)	$320,813,696	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 60 since FY2022.
95	Riverside Research Institute 3 awardees, including Applied Research Solutions, Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) WHS (DOD Washington Headquarters Service)	$316,281,351	0.1%	Rank history: #91 in FY2021, #94 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
96	World Wide Technology LLC Top agencies Army (Department of the Army) DOJ (Department of Justice) Navy (Department of the Navy)	$314,787,148	0.1%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2024 and #75 in FY2025; new.
97	The Pennsylvania State University 2 awardees Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$309,161,249	0.1%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2024 and #79 in FY2025; up 6 since FY2022.
98	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)	$307,831,003	0.1%	Rank history: not on the FY2021 list, #91 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
99	The Rand Corporation Top agencies DHS (Department of Homeland Security) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$305,282,400	0.1%	Rank history: #98 in FY2021, #98 in FY2022, #97 in FY2024 and not on the FY2025 list; down 1 since FY2022.
100	Range Generation Next LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$304,824,339	0.1%	Rank history: #85 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 7 since FY2022.

Show 75 more

100 of 22,139 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	$70,526,005,114	Booz Allen Hamilton Holding Corporation
5417 Scientific Research and Development Services	$63,842,258,956	Lockheed Martin Corporation
5413 Architectural, Engineering, and Related Services	$51,708,557,360	General Dynamics Corporation
5416 Management, Scientific, and Technical Consulting Services	$22,520,642,631	Deployed Resources LLC
5419 Other Professional, Scientific, and Technical Services	$15,385,832,370	Battelle Energy Alliance, LLC
5412 Accounting, Tax Preparation, Bookkeeping, and Payroll Services	$2,244,050,726	Ernst & Young LLP
5418 Advertising, Public Relations, and Related Services	$2,211,884,110	Omnicom Group Inc.
5411 Legal Services	$1,043,271,858	Vera Institute of Justice, Inc.
5414 Specialized Design Services	$66,170,871	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 $241 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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 FY2023?

1. General Dynamics Corporation ($9.48B), 2. Lockheed Martin Corporation ($8.35B), 3. Booz Allen Hamilton Holding Corporation ($7.45B), 4. Leidos Holdings, Inc. ($6.71B), 5. Northrop Grumman Corporation ($4.94B), 6. Science Applications International Corporation ($4.48B), 7. Fluor Corporation ($3.67B), 8. CACI International Inc. ($3.67B), 9. RTX Corporation ($3.36B), 10. The Mitre Corporation ($2.92B).

On GovTribe

Research every contractor on this list

Every contract, task order and IDV they hold
Their subsidiaries, teammates and competitors
Open opportunities they're positioned for
Alerts when they win new work

Try for free Login