Top 100 Contractors in NAICS 5413: Architectural, Engineering, and Related Services, FY2023

Name: Top 100 Contractors in NAICS 5413: Architectural, Engineering, and Related Services, FY2023
Creator: GovTribe

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

The top 10 won 35% of FY2023 NAICS 5413 contract dollars

Contract obligations: $51,708,557,360 Net of deobligations, by contracts coded NAICS 5413 or a code under it
Contractors: 5,116 Parent companies with an obligation
Largest contractor: General Dynamics Corporation $5.56 billion, 10.3% 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 16 awardees, including Electric Boat Corporation, General Dynamics Information Technology, Inc. and General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$5,555,433,787	10.3%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2024 and #1 in FY2025; unchanged since FY2022.
2	Booz Allen Hamilton Holding Corporation 2 awardees, including Booz Allen Hamilton Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$2,067,572,705	3.8%	Rank history: #5 in FY2021, #4 in FY2022, #3 in FY2024 and #4 in FY2025; up 2 since FY2022.
3	RTX Corporation 63 awardees, including Raytheon Company, Rockwell Collins, Inc. and Noresco, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$2,022,421,854	3.7%	Rank history: #2 in FY2021, #2 in FY2022, #4 in FY2024 and #3 in FY2025; down 1 since FY2022.
4	Northrop Grumman Corporation 44 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$1,949,982,589	3.6%	Rank history: #3 in FY2021, #3 in FY2022, #5 in FY2024 and #5 in FY2025; down 1 since FY2022.
5	Lockheed Martin Corporation 30 awardees Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$1,899,257,861	3.5%	Rank history: #4 in FY2021, #5 in FY2022, #2 in FY2024 and #2 in FY2025; unchanged since FY2022.
6	BAE Systems PLC 15 awardees, including BAE Systems Technology Solutions & Services Inc., BAE Systems Land & Armaments L.P. and BAE Systems Information and Electronic Systems Integration Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$1,292,325,583	2.4%	Rank history: #10 in FY2021, #9 in FY2022, #6 in FY2024 and #6 in FY2025; up 3 since FY2022.
7	L3Harris Technologies, Inc. 31 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)	$1,157,138,734	2.1%	Rank history: #6 in FY2021, #6 in FY2022, #13 in FY2024 and #13 in FY2025; down 1 since FY2022.
8	Science Applications International Corporation 6 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DOT (Department of Transportation)	$1,096,705,291	2.0%	Rank history: #7 in FY2021, #7 in FY2022, #7 in FY2024 and #8 in FY2025; down 1 since FY2022.
9	AECOM 31 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)	$938,053,908	1.7%	Rank history: #13 in FY2021, #10 in FY2022, #21 in FY2024 and #63 in FY2025; up 1 since FY2022.
10	The Boeing Company 22 awardees, including Insitu, Inc. and Boeing Aerospace Operations, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$922,201,926	1.7%	Rank history: #11 in FY2021, #8 in FY2022, #8 in FY2024 and #11 in FY2025; down 2 since FY2022.
11	CACI International Inc. 7 awardees, including Caci Nss, LLC, Caci, Inc. - Federal and Caci Technologies, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) DTRA (Defense Threat Reduction Agency)	$921,237,112	1.7%	Rank history: #8 in FY2021, #11 in FY2022, #9 in FY2024 and #10 in FY2025; unchanged since FY2022.
12	B.l. Harbert Holdings, L.L.C. Through BL Harbert International LLC Top agencies DOS (Department of State)	$780,559,560	1.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 456 since FY2022.
13	Leidos Holdings, Inc. 11 awardees, including Leidos, Inc., Dynetics, Inc. and Gibbs & Cox, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$759,111,858	1.4%	Rank history: #9 in FY2021, #12 in FY2022, #11 in FY2024 and #12 in FY2025; down 1 since FY2022.
14	HP Enterprise Services LLC 6 awardees, including Peraton Inc., Peraton Technology Services Inc. and Peraton Services & Solutions Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$682,907,870	1.3%	Rank history: #23 in FY2021, #15 in FY2022, #85 in FY2024 and not on the FY2025 list; up 1 since FY2022.
15	Huntington Ingalls Industries, Inc. 6 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) Navy (Department of the Navy) USAF (Department of the Air Force)	$623,738,277	1.2%	Rank history: #20 in FY2021, #16 in FY2022, #10 in FY2024 and #14 in FY2025; up 1 since FY2022.
16	Jacobs Engineering Group Inc. 32 awardees, including Amentum Technology, Inc., Ch2M Hill, Inc. and JE Architects / Engineers, P.C. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$598,388,989	1.1%	Rank history: #14 in FY2021, #13 in FY2022, #86 in FY2024 and not on the FY2025 list; down 3 since FY2022.
17	Alion Science and Technology Corporation 4 awardees, including HII Mission Technologies Corp Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$487,570,769	0.9%	Rank history: #19 in FY2021, #29 in FY2022 and not on the FY2024–FY2025 lists; up 12 since FY2022.
18	Bechtel Corp Through National Aerospace Solutions, LLC Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$442,491,770	0.8%	Rank history: #25 in FY2021, #20 in FY2022, #47 in FY2024 and not on the FY2025 list; up 2 since FY2022.
19	Kbr, Inc. 5 awardees, including KBR Wyle Services, LLC Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration) OSD (Office of the Secretary of Defense)	$336,198,970	0.6%	Rank history: #16 in FY2021, #18 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
20	Amentum Services, Inc. 2 awardees Top agencies Navy (Department of the Navy) Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$317,881,403	0.6%	Rank history: #18 in FY2021, #19 in FY2022, #12 in FY2024 and not on the FY2025 list; down 1 since FY2022.
21	Noblis, Inc. 2 awardees, including Noblis MSD LLC Top agencies Navy (Department of the Navy) DOT (Department of Transportation) DTRA (Defense Threat Reduction Agency)	$309,710,372	0.6%	Rank history: #37 in FY2021, #24 in FY2022, #30 in FY2024 and #37 in FY2025; up 3 since FY2022.
22	Tetra Tech, Inc. 29 awardees, including Advanced Management Technology, Inc. and Bluewater Federal Solutions, Inc. Top agencies USAID (US Agency for International Development) Army (Department of the Army) DOT (Department of Transportation)	$305,744,552	0.6%	Rank history: #27 in FY2021, #22 in FY2022, #22 in FY2024 and #22 in FY2025; unchanged since FY2022.
23	Smartronix LLC Top agencies Navy (Department of the Navy)	$305,248,639	0.6%	Rank history: #33 in FY2021, #23 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
24	Scientific Research Corporation Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$305,183,688	0.6%	Rank history: #21 in FY2021, #26 in FY2022, #24 in FY2024 and #21 in FY2025; up 2 since FY2022.
25	Parsons Corporation 7 awardees, including Parsons Government Services Inc., Parsons Technical Services Inc. and Parsons-Versar Joint Venture Top agencies Navy (Department of the Navy) DOE (Department of Energy) USAF (Department of the Air Force)	$293,701,559	0.5%	Rank history: #36 in FY2021, #36 in FY2022, #27 in FY2024 and #23 in FY2025; up 11 since FY2022.
26	International Business Machines Corporation 2 awardees Top agencies Navy (Department of the Navy) DMEA (Defense Microelectronics Activity) USAF (Department of the Air Force)	$282,610,957	0.5%	Rank history: #67 in FY2021, #25 in FY2022, #26 in FY2024 and #27 in FY2025; down 1 since FY2022.
27	Credence Management Solutions Limited Liability Company Top agencies USAF (Department of the Air Force) USAID (US Agency for International Development) Army (Department of the Army)	$278,352,007	0.5%	Rank history: #28 in FY2021, #27 in FY2022, #20 in FY2024 and #54 in FY2025; unchanged since FY2022.
28	Serco Inc 2 awardees, including Serco-Ips Corporation Top agencies Navy (Department of the Navy) EPA (Environmental Protection Agency) Army (Department of the Army)	$266,413,181	0.5%	Rank history: not on the FY2021–FY2022 lists, #15 in FY2024 and #15 in FY2025; new.
29	The Charles Stark Draper Laboratory, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$258,407,657	0.5%	Rank history: #31 in FY2021, #32 in FY2022, #14 in FY2024 and #20 in FY2025; up 3 since FY2022.
30	Range Generation Next LLC Top agencies USAF (Department of the Air Force)	$241,470,217	0.4%	Rank history: #24 in FY2021, #30 in FY2022, #35 in FY2024 and not on the FY2025 list; unchanged since FY2022.
31	Hdr, Inc. 39 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) DOI (Department of the Interior)	$230,181,003	0.4%	Rank history: #26 in FY2021, #21 in FY2022, #37 in FY2024 and #35 in FY2025; down 10 since FY2022.
32	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) USAF (Department of the Air Force) Army (Department of the Army)	$217,906,206	0.4%	Rank history: #15 in FY2021, #14 in FY2022 and not on the FY2024–FY2025 lists; down 18 since FY2022.
33	Nova Global Supply and Services LLC 2 awardees, including Valiant Global Defense Services Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$197,316,799	0.4%	Rank history: #42 in FY2021, #40 in FY2022, #78 in FY2024 and not on the FY2025 list; up 7 since FY2022.
34	Reliance Test & Technology, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$195,497,417	0.4%	Rank history: #41 in FY2021, #31 in FY2022, #33 in FY2024 and #33 in FY2025; down 3 since FY2022.
35	Gryphon Technologies, Inc. 4 awardees, including Gryphon Technologies, L.C., Gryphon Aerospace, LLC and Gryphon Marine, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$193,117,725	0.4%	Rank history: #35 in FY2021, #47 in FY2022 and not on the FY2024–FY2025 lists; up 12 since FY2022.
36	Applied Research Associates, Inc. 2 awardees Top agencies Army (Department of the Army) DHS (Department of Homeland Security) DTRA (Defense Threat Reduction Agency)	$193,053,931	0.4%	Rank history: not on the FY2021 list, #39 in FY2022, #39 in FY2024 and #47 in FY2025; up 3 since FY2022.
37	Torch Technologies Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$177,345,908	0.3%	Rank history: #34 in FY2021, #38 in FY2022, #60 in FY2024 and #66 in FY2025; up 1 since FY2022.
38	Mantech International Corporation 3 awardees, including Mantech Advanced Systems International, Inc., Mantech SRS Technologies, Inc. and Nexolve Corporation Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DOS (Department of State)	$174,005,964	0.3%	Rank history: #17 in FY2021, #17 in FY2022 and not on the FY2024–FY2025 lists; down 21 since FY2022.
39	Burns & Mcdonnell, Inc. 3 awardees, including Burns & Mcdonnell Engineering Company, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$171,840,665	0.3%	Rank history: #47 in FY2021, #46 in FY2022, #98 in FY2024 and not on the FY2025 list; up 7 since FY2022.
40	The Mitre Corporation 2 awardees Top agencies DOT (Department of Transportation) NASA (National Aeronautics and Space Administration)	$169,836,574	0.3%	Rank history: #12 in FY2021, #37 in FY2022, #55 in FY2024 and not on the FY2025 list; down 3 since FY2022.
41	DCS Corporation 2 awardees Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$161,296,891	0.3%	Rank history: #40 in FY2021, #35 in FY2022, #34 in FY2024 and #32 in FY2025; down 6 since FY2022.
42	Deloitte LLP 2 awardees, including Deloitte Consulting LLP Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) USDA (Department of Agriculture)	$150,614,212	0.3%	Rank history: #32 in FY2021, #28 in FY2022 and not on the FY2024–FY2025 lists; down 14 since FY2022.
43	Leonardo S.p.A. 7 awardees, including DRS Network & Imaging Systems LLC, DRS Sustainment Systems, Inc. and DRS Advanced ISR LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security) Navy (Department of the Navy)	$149,639,496	0.3%	Rank history: #53 in FY2021, #57 in FY2022, #95 in FY2024 and not on the FY2025 list; up 14 since FY2022.
44	Deloitte Consulting LLP Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) HHS (Department of Health and Human Services)	$145,698,519	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 105 since FY2022.
45	LMI Consulting, LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security) OSD (Office of the Secretary of Defense)	$145,392,459	0.3%	Rank history: not on the FY2021 list, #33 in FY2022, #29 in FY2024 and #36 in FY2025; down 12 since FY2022.
46	Precise Systems, Inc. Top agencies Navy (Department of the Navy)	$135,515,959	0.3%	Rank history: #62 in FY2021, #49 in FY2022, #44 in FY2024 and #53 in FY2025; up 3 since FY2022.
47	Cherokee Nation 6 awardees, including Cherokee Nation Strategic Programs, L.L.C., Cherokee Nation Red Wing, L.L.C. and Cherokee Federal Solutions, L.L.C. Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) Navy (Department of the Navy)	$133,379,320	0.2%	Rank history: #59 in FY2021, #63 in FY2022 and not on the FY2024–FY2025 lists; up 16 since FY2022.
48	Tcom, L.P. Top agencies Army (Department of the Army)	$129,561,441	0.2%	Rank history: #44 in FY2021, #43 in FY2022, #41 in FY2024 and #7 in FY2025; down 5 since FY2022.
49	Honeywell International Inc. 6 awardees, including Honeywell Building Solutions SES Corp and Honeywell Inc. Top agencies GSA (General Services Administration) Army (Department of the Army) USAF (Department of the Air Force)	$128,117,076	0.2%	Rank history: #51 in FY2021, #44 in FY2022, not on the FY2024 list and #44 in FY2025; down 5 since FY2022.
50	UIC Government Services LLC 7 awardees, including Bowhead Professional and Technical Solutions LLC, Bowhead Mission Solutions, LLC and Bowhead Business and Technology Solutions, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$120,645,628	0.2%	Rank history: not on the FY2021 list, #59 in FY2022 and not on the FY2024–FY2025 lists; up 9 since FY2022.
51	Apogee Engineering LLC Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) DOI (Department of the Interior)	$113,470,792	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 164 since FY2022.
52	Chugach Technical Solutions LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) USAID (US Agency for International Development)	$113,049,171	0.2%	Rank history: #87 in FY2021, #76 in FY2022 and not on the FY2024–FY2025 lists; up 24 since FY2022.
53	Trax International Corporation 2 awardees Top agencies Army (Department of the Army)	$112,995,317	0.2%	Rank history: #52 in FY2021, #50 in FY2022, #45 in FY2024 and #38 in FY2025; down 3 since FY2022.
54	LS Technologies LLC Top agencies DOT (Department of Transportation)	$112,944,698	0.2%	Rank history: #50 in FY2021, #41 in FY2022 and not on the FY2024–FY2025 lists; down 13 since FY2022.
55	Ameresco Inc. 3 awardees, including Ameresco Select, Inc. and Ameresco Federal Solutions, Inc. Top agencies Navy (Department of the Navy) GSA (General Services Administration) VA (Department of Veterans Affairs)	$107,167,629	0.2%	Rank history: #74 in FY2021, #45 in FY2022, #75 in FY2024 and #17 in FY2025; down 10 since FY2022.
56	University of Dayton Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service) EPA (Environmental Protection Agency)	$106,572,070	0.2%	Rank history: #65 in FY2021, #68 in FY2022 and not on the FY2024–FY2025 lists; up 12 since FY2022.
57	Fidelity Technologies Corporation Top agencies Navy (Department of the Navy)	$106,299,210	0.2%	Rank history: #100 in FY2021, #60 in FY2022, #42 in FY2024 and #46 in FY2025; up 3 since FY2022.
58	Sigma Defense Systems LLC 2 awardees, including Solute Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DISA (Defense Information Systems Agency)	$104,773,513	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #92 in FY2025; up 57 since FY2022.
59	M.c. Dean, Inc. Top agencies Navy (Department of the Navy) AOUSC (Administrative Office of the U.S. Courts) Army (Department of the Army)	$101,014,975	0.2%	Rank history: #82 in FY2021, #53 in FY2022, #58 in FY2024 and #49 in FY2025; down 6 since FY2022.
60	Arctic Slope Regional Corporation 10 awardees, including Netcentric Technology, LLC, Asrc Federal System Solutions LLC and Asrc Federal Professional Services, LLC Top agencies USAF (Department of the Air Force) DOT (Department of Transportation) Army (Department of the Army)	$100,269,282	0.2%	Rank history: #58 in FY2021, #56 in FY2022, #46 in FY2024 and #30 in FY2025; down 4 since FY2022.
61	Delta Solutions & Strategies LLC Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) Navy (Department of the Navy)	$92,870,663	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 55 since FY2022.
62	Systems Planning and Analysis, Inc. Top agencies Navy (Department of the Navy)	$91,295,057	0.2%	Rank history: #77 in FY2021, #67 in FY2022, #38 in FY2024 and #31 in FY2025; up 5 since FY2022.
63	Mayvin, Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) Army (Department of the Army)	$90,755,047	0.2%	Rank history: not on the FY2021 list, #66 in FY2022, #68 in FY2024 and #56 in FY2025; up 3 since FY2022.
64	Textron Inc. 6 awardees, including Textron Systems Corporation, Textron Aviation Defense LLC and Bell Textron Inc. Top agencies Navy (Department of the Navy) USSOCOM (United States Special Operations Command) USAF (Department of the Air Force)	$89,651,589	0.2%	Rank history: #54 in FY2021, #51 in FY2022, #56 in FY2024 and #82 in FY2025; down 13 since FY2022.
65	The Compass PTS JV Top agencies DHS (Department of Homeland Security)	$88,810,048	0.2%	Rank history: #60 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 69 since FY2022.
66	The Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) Army (Department of the Army)	$88,645,324	0.2%	Rank history: not on the FY2021 list, #99 in FY2022 and not on the FY2024–FY2025 lists; up 33 since FY2022.
67	Axient LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$87,868,467	0.2%	Rank history: #30 in FY2021, #34 in FY2022 and not on the FY2024–FY2025 lists; down 33 since FY2022.
68	American Systems Corporation Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$82,774,390	0.2%	Rank history: #61 in FY2021, #90 in FY2022, #74 in FY2024 and #74 in FY2025; up 22 since FY2022.
69	Tatitlek Corporation Through Tatitlek Technologies, LLC Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy) USAF (Department of the Air Force)	$82,436,601	0.2%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2024 and not on the FY2025 list; up 396 since FY2022.
70	CAE Inc. 3 awardees, including CAE Usa, Inc. Top agencies Navy (Department of the Navy)	$81,453,631	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 68 since FY2022.
71	Bowhead Program Management & Operations, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$80,831,755	0.1%	Rank history: not on the FY2021–FY2022 lists, #57 in FY2024 and #50 in FY2025; up 46 since FY2022.
72	Vanguard Inspection Services Top agencies DHS (Department of Homeland Security)	$79,214,960	0.1%	Rank history: #55 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 39 since FY2022.
73	Stantec Inc. 18 awardees, including Stantec Consulting Services Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DOI (Department of the Interior)	$77,265,737	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #78 in FY2025; new.
74	Resource Management Concepts, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$75,755,229	0.1%	Rank history: not on the FY2021 list, #97 in FY2022, #77 in FY2024 and #48 in FY2025; up 23 since FY2022.
75	PAE Government Services Inc. 6 awardees, including PAE Applied Technologies LLC, PAE National Security Solutions LLC and Centra Technology, Inc. Top agencies DOS (Department of State) Commerce (Department of Commerce) USAF (Department of the Air Force)	$75,200,543	0.1%	Rank history: #39 in FY2021, #48 in FY2022 and not on the FY2024–FY2025 lists; down 27 since FY2022.
76	Johnson Controls Security Solutions LLC 5 awardees, including Johnson Controls Government Systems, LLC, Johnson Controls Fire Protection LP and Johnson Controls Building Automation Systems, LLC Top agencies Army (Department of the Army) GSA (General Services Administration) Navy (Department of the Navy)	$74,950,725	0.1%	Rank history: #99 in FY2021, #61 in FY2022, #71 in FY2024 and not on the FY2025 list; down 15 since FY2022.
77	RBA Group the 5 awardees, including NV5 Geospatial, Inc., Geodynamics LLC and J.b.a. Consulting Engineers, Inc. Top agencies DOI (Department of the Interior) Commerce (Department of Commerce) Army (Department of the Army)	$73,633,856	0.1%	Rank history: not on the FY2021 list, #75 in FY2022 and not on the FY2024–FY2025 lists; down 2 since FY2022.
78	Global Solutions Ventures, LLC Top agencies USAID (US Agency for International Development) DOS (Department of State)	$72,780,830	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 166 since FY2022.
79	Advancing Resilience In Communities Top agencies DHS (Department of Homeland Security)	$72,581,111	0.1%	Rank history: not on the FY2021 list, #87 in FY2022 and not on the FY2024–FY2025 lists; up 8 since FY2022.
80	The Mil Corporation Top agencies Navy (Department of the Navy)	$71,497,765	0.1%	Rank history: not on the FY2021 list, #91 in FY2022 and not on the FY2024–FY2025 lists; up 11 since FY2022.
81	Indus Technology Inc. Top agencies Navy (Department of the Navy)	$70,382,372	0.1%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2024 and #84 in FY2025; up 24 since FY2022.
82	KT Consulting, Inc. Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$70,338,098	0.1%	Rank history: not on the FY2021 list, #85 in FY2022 and not on the FY2024–FY2025 lists; up 3 since FY2022.
83	Mele Associates Inc. Top agencies DOE (Department of Energy)	$70,161,903	0.1%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2024 and #57 in FY2025; up 20 since FY2022.
84	Georgia TECH Research Corp Through Georgia TECH Applied Research Corp Top agencies USAF (Department of the Air Force)	$69,333,631	0.1%	Rank history: #43 in FY2021, #52 in FY2022 and not on the FY2024–FY2025 lists; down 32 since FY2022.
85	Intuitive Research and Technology Corporation 2 awardees Top agencies Army (Department of the Army)	$69,020,530	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 52 since FY2022.
86	Oasis Systems, LLC Top agencies DOT (Department of Transportation) Navy (Department of the Navy) USAF (Department of the Air Force)	$68,914,262	0.1%	Rank history: not on the FY2021 list, #88 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
87	Southwest Range Services LLC Top agencies Army (Department of the Army)	$68,724,811	0.1%	Rank history: #75 in FY2021, #77 in FY2022, #93 in FY2024 and #99 in FY2025; down 10 since FY2022.
88	Digiflight Incorporated Top agencies Army (Department of the Army)	$68,436,294	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #87 in FY2025; up 37 since FY2022.
89	Falconwood Top agencies Navy (Department of the Navy)	$68,072,956	0.1%	Rank history: not on the FY2021 list, #95 in FY2022, not on the FY2024 list and #98 in FY2025; up 6 since FY2022.
90	Spalding Consulting, Inc. Top agencies Navy (Department of the Navy)	$67,540,735	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 17 since FY2022.
91	Avantus Federal LLC Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) DISA (Defense Information Systems Agency)	$67,311,012	0.1%	Rank history: not on the FY2021–FY2022 lists, #40 in FY2024 and #39 in FY2025; up 44 since FY2022.
92	National Center for Defense Manufacturing and Machining Top agencies Army (Department of the Army)	$66,644,592	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 69 since FY2022.
93	Vectrus Systems Corporation 3 awardees, including V2X Systems LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$65,256,698	0.1%	Rank history: not on the FY2021 list, #82 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
94	Seacorp, LLC 2 awardees, including Analysis Design & Diagnostics Inc. Top agencies Navy (Department of the Navy)	$65,242,776	0.1%	Rank history: not on the FY2021 list, #89 in FY2022, #84 in FY2024 and #76 in FY2025; down 5 since FY2022.
95	Resolution Consultants - An Aecom-Ensafe Joint Venture Top agencies Navy (Department of the Navy)	$65,218,435	0.1%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2024 and #100 in FY2025; up 379 since FY2022.
96	Simventions Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency)	$64,649,292	0.1%	Rank history: not on the FY2021–FY2022 lists, #91 in FY2024 and #75 in FY2025; up 8 since FY2022.
97	WSM Pacific Siop, A Joint Venture Top agencies Navy (Department of the Navy)	$64,279,957	0.1%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2024 and #55 in FY2025; up 31 since FY2022.
98	Atlas Technologies, Inc. Top agencies Navy (Department of the Navy)	$64,194,324	0.1%	Rank history: not on the FY2021 list, #74 in FY2022 and not on the FY2024–FY2025 lists; down 24 since FY2022.
99	R & P Technologies Holdings LLC Through Reliability & Performance Technologies, LLC Top agencies Navy (Department of the Navy)	$62,510,158	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 13 since FY2022.
100	VT Milcom Inc. 3 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$61,774,090	0.1%	Rank history: #66 in FY2021, #72 in FY2022 and not on the FY2024–FY2025 lists; down 28 since FY2022.

Show 75 more

100 of 5,116 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 5413

Code	Net obligations	Largest contractor
54133 Engineering Services	$48,529,036,026	General Dynamics Corporation
54131 Architectural Services	$1,796,246,294	B.l. Harbert Holdings, L.L.C.
54138 Testing Laboratories and Services	$619,991,018	Emory University
54137 Surveying and Mapping (except Geophysical) Services	$383,293,052	Textron Inc.
54135 Building Inspection Services	$175,408,046	Vanguard Inspection Services
54136 Geophysical Surveying and Mapping Services	$157,227,737	RBA Group the
54132 Landscape Architectural Services	$46,916,491	Hdr, 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 $54.1 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 5413 contractors in FY2023?

1. General Dynamics Corporation ($5.56B), 2. Booz Allen Hamilton Holding Corporation ($2.07B), 3. RTX Corporation ($2.02B), 4. Northrop Grumman Corporation ($1.95B), 5. Lockheed Martin Corporation ($1.9B), 6. BAE Systems PLC ($1.29B), 7. L3Harris Technologies, Inc. ($1.16B), 8. Science Applications International Corporation ($1.1B), 9. AECOM ($938M), 10. The Boeing Company ($922M).

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