Top 100 Department of Transportation Contractors, Jul 2025–Jun 2026

Name: Top 100 Department of Transportation Contractors, Jul 2025–Jun 2026
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Agency page on GovTribe

The top 10 won 38% of Department of Transportation contract dollars from July 2025 through June 2026

Contract obligations: $10,871,750,481 Net of deobligations, by the Department of Transportation and its offices
Contractors: 2,453 Parent companies with an obligation
Largest contractor: L3Harris Technologies, Inc. $1.35 billion, 11.6% of obligations
Data as of: Oct 23, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	L3Harris Technologies, Inc. 5 awardees, including Harris Corporation and L3Harris Maritime Power & Energy Solutions, Inc. Top NAICS codes 541330 Engineering Services 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 541512 Computer Systems Design Services	$1,348,890,434	11.6%	Rank history: #2 in FY2021, #3 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	RTX Corporation 15 awardees, including Raytheon Company, Arinc Incorporated and Rockwell Collins, Inc. Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 541330 Engineering Services 541519 Other Computer Related Services	$706,791,537	6.1%	Rank history: #5 in FY2021, #5 in FY2022, #5 in FY2023, #5 in FY2024 and #4 in FY2025; up 4 since Jul 2024–Jun 2025.
3	Indra Air Traffic, Inc. Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$517,764,915	4.5%	Rank history: not on the FY2021–FY2024 lists and #11 in FY2025; up 162 since Jul 2024–Jun 2025.
4	Rohde & Schwarz GMBH & Co. Kommanditgesellschaft Through Rohde & Schwarz Usa, Inc. Top NAICS codes 334210 Telephone Apparatus Manufacturing 488190 Other Support Activities for Air Transportation	$442,814,452	3.8%	Rank history: not on the FY2021–FY2024 lists and #21 in FY2025; up 28 since Jul 2024–Jun 2025.
5	Leidos Holdings, Inc. 7 awardees, including Leidos, Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541512 Computer Systems Design Services 488111 Air Traffic Control	$433,971,379	3.7%	Rank history: #3 in FY2021, #1 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; down 3 since Jul 2024–Jun 2025.
6	Science Applications International Corporation 4 awardees Top NAICS codes 541330 Engineering Services 541513 Computer Facilities Management Services 541512 Computer Systems Design Services	$245,820,270	2.1%	Rank history: #4 in FY2021, #4 in FY2022, #4 in FY2023, #4 in FY2024 and #3 in FY2025; down 3 since Jul 2024–Jun 2025.
7	Parsons Corporation 2 awardees, including Ptsi Managed Services Inc. and Parsons Government Services Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541330 Engineering Services	$234,641,042	2.0%	Rank history: #6 in FY2021, #6 in FY2022, #20 in FY2023, #13 in FY2024 and #13 in FY2025; new, not ranked in Jul 2024–Jun 2025.
8	Frequentis Usa, Inc. Top NAICS codes 334210 Telephone Apparatus Manufacturing 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing	$211,614,207	1.8%	Rank history: not on the FY2021–FY2023 lists, #44 in FY2024 and #9 in FY2025; up 9 since Jul 2024–Jun 2025.
9	Tetra Tech, Inc. 9 awardees, including LS Technologies LLC, Advanced Management Technology, Inc. and Halvik LLC Top NAICS codes 541330 Engineering Services 541511 Custom Computer Programming Services 541990 All Other Professional, Scientific, and Technical Services	$162,918,259	1.4%	Rank history: #19 in FY2021, #17 in FY2022, #26 in FY2023, #10 in FY2024 and #6 in FY2025; unchanged since Jul 2024–Jun 2025.
10	Walsh Federal LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$158,136,030	1.4%	Rank history: not on the FY2021–FY2023 lists, #29 in FY2024 and #12 in FY2025; up 8 since Jul 2024–Jun 2025.
11	CDW Government LLC Top NAICS codes 334111 Electronic Computer Manufacturing 541512 Computer Systems Design Services 423710 Hardware Merchant Wholesalers	$153,609,042	1.3%	Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #5 in FY2025; down 7 since Jul 2024–Jun 2025.
12	Peraton Inc. Top NAICS codes 541512 Computer Systems Design Services 513210 Software Publishers	$133,658,709	1.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
13	The Mitre Corporation Top NAICS codes 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$132,514,491	1.1%	Rank history: #7 in FY2021, #9 in FY2022, #6 in FY2023, #7 in FY2024 and #8 in FY2025; down 6 since Jul 2024–Jun 2025.
14	General Dynamics Corporation 6 awardees, including General Dynamics Information Technology, Inc., General Dynamics Mission Systems, Inc. and Metro Machine Corp. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 811213 Communication Equipment Repair and Maintenance 541512 Computer Systems Design Services	$118,769,291	1.0%	Rank history: #8 in FY2021, #11 in FY2022, #8 in FY2023, #6 in FY2024 and #7 in FY2025; down 9 since Jul 2024–Jun 2025.
15	Noblis, Inc. Top NAICS codes 541330 Engineering Services 541990 All Other Professional, Scientific, and Technical Services	$110,243,604	1.0%	Rank history: #12 in FY2021, #13 in FY2022, #12 in FY2023, #11 in FY2024 and #14 in FY2025; down 5 since Jul 2024–Jun 2025.
16	Robinson Aviation (Rva), Inc. Top NAICS codes 488111 Air Traffic Control	$106,257,232	0.9%	Rank history: #14 in FY2021, #16 in FY2022, #15 in FY2023, #14 in FY2024 and #16 in FY2025; down 1 since Jul 2024–Jun 2025.
17	Textron Inc. 3 awardees, including Textron Aviation Inc. and Bell Textron Inc. Top NAICS codes 336411 Aircraft Manufacturing 488190 Other Support Activities for Air Transportation 611512 Flight Training	$102,536,367	0.9%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2023, #25 in FY2024 and #10 in FY2025; down 9 since Jul 2024–Jun 2025.
18	Midwest Air Traffic Control Service Inc Top NAICS codes 488111 Air Traffic Control	$98,467,365	0.8%	Rank history: #18 in FY2021, #20 in FY2022, #19 in FY2023, #15 in FY2024 and #20 in FY2025; up 2 since Jul 2024–Jun 2025.
19	Arctic Slope Regional Corporation 6 awardees, including Asrc Federal Advanced Research, LLC, Asrc Federal System Solutions LLC and Arctic Slope Technical Services, Inc. Top NAICS codes 541330 Engineering Services 541519 Other Computer Related Services 238210 Electrical Contractors and Other Wiring Installation Contractors	$90,177,895	0.8%	Rank history: #15 in FY2021, #15 in FY2022, #21 in FY2023, #20 in FY2024 and #19 in FY2025; up 5 since Jul 2024–Jun 2025.
20	Tote Services, LLC Top NAICS codes 336611 Ship Building and Repairing 483111 Deep Sea Freight Transportation	$87,543,158	0.8%	Rank history: not on the FY2021–FY2023 lists, #58 in FY2024 and #27 in FY2025; up 21 since Jul 2024–Jun 2025.
21	Dell Technologies Inc. Through Dell Federal Systems L.P Top NAICS codes 513210 Software Publishers 334111 Electronic Computer Manufacturing 334112 Computer Storage Device Manufacturing	$86,465,757	0.7%	Rank history: not on the FY2021–FY2023 lists, #18 in FY2024 and #29 in FY2025; up 87 since Jul 2024–Jun 2025.
22	Karsun Solutions LLC Top NAICS codes 541519 Other Computer Related Services	$82,706,884	0.7%	Rank history: #13 in FY2021, #19 in FY2022, #16 in FY2023, #17 in FY2024 and #17 in FY2025; down 6 since Jul 2024–Jun 2025.
23	Guidehouse Inc. 3 awardees, including Peraton Inc. Top NAICS codes 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services 561990 All Other Support Services	$72,980,223	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
24	Technical Communities, Inc. Top NAICS codes 443120 Computer and Software Stores 334419 Other Electronic Component Manufacturing 334515 Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals	$72,044,489	0.6%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; up 142 since Jul 2024–Jun 2025.
25	Eclipse Companies, LLC Top NAICS codes 237310 Highway, Street, and Bridge Construction	$67,155,718	0.6%	Rank history: not on the FY2021–FY2024 lists and #70 in FY2025; up 95 since Jul 2024–Jun 2025.
26	Cherokee Nation Red Wing, L.L.C. 2 awardees, including Cherokee Strategic Solutions, L.L.C. Top NAICS codes 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541511 Custom Computer Programming Services	$65,982,621	0.6%	Rank history: not on the FY2021–FY2024 lists and #56 in FY2025; up 40 since Jul 2024–Jun 2025.
27	Structsure Projects Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$64,434,302	0.6%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023, not on the FY2024 list and #23 in FY2025; up 312 since Jul 2024–Jun 2025.
28	M.c. Dean, Inc. Top NAICS codes 561621 Security Systems Services (except Locksmiths) 238210 Electrical Contractors and Other Wiring Installation Contractors	$62,120,357	0.5%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2023, #68 in FY2024 and #33 in FY2025; up 5 since Jul 2024–Jun 2025.
29	Veracity Engineering LLC Top NAICS codes 541330 Engineering Services	$53,998,679	0.5%	Rank history: #26 in FY2021, #52 in FY2022, #33 in FY2023, #21 in FY2024 and #30 in FY2025; down 4 since Jul 2024–Jun 2025.
30	Fort Myer Construction Corp Top NAICS codes 237310 Highway, Street, and Bridge Construction	$53,052,326	0.5%	Rank history: not on the FY2021 list, #7 in FY2022, not on the FY2023–FY2024 lists and #25 in FY2025; new, not ranked in Jul 2024–Jun 2025.
31	Jacobs Engineering Group Inc. 4 awardees, including Jacobs Project Management Co Top NAICS codes 541330 Engineering Services	$50,509,693	0.4%	Rank history: not on the FY2021–FY2023 lists, #50 in FY2024 and #36 in FY2025; up 9 since Jul 2024–Jun 2025.
32	Sunhillo Corp Top NAICS codes 334290 Other Communications Equipment Manufacturing 541511 Custom Computer Programming Services 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing	$50,251,019	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
33	At&T Inc. 4 awardees, including At&T Enterprises, LLC and Att Mobility LLC Top NAICS codes 517110 Wired Telecommunications Carriers 517312 Wireless Telecommunications Carriers (except Satellite) 517810 All Other Telecommunications	$49,787,672	0.4%	Rank history: not on the FY2021–FY2023 lists, #34 in FY2024 and #24 in FY2025; down 14 since Jul 2024–Jun 2025.
34	Concept Solutions LLC Top NAICS codes 541511 Custom Computer Programming Services 541519 Other Computer Related Services 541330 Engineering Services	$49,199,235	0.4%	Rank history: #34 in FY2021, #41 in FY2022, #25 in FY2023, #26 in FY2024 and #28 in FY2025; down 7 since Jul 2024–Jun 2025.
35	Saab AB Through Saab Inc. Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 541519 Other Computer Related Services	$47,394,966	0.4%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; new, not ranked in Jul 2024–Jun 2025.
36	Ernst & Young LLP 2 awardees Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541519 Other Computer Related Services 541211 Offices of Certified Public Accountants	$46,927,646	0.4%	Rank history: not on the FY2021–FY2023 lists, #56 in FY2024 and #32 in FY2025; down 6 since Jul 2024–Jun 2025.
37	Crown Innovations, Inc. Top NAICS codes 237130 Power and Communication Line and Related Structures Construction 541511 Custom Computer Programming Services 541330 Engineering Services	$44,879,884	0.4%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; up 49 since Jul 2024–Jun 2025.
38	Astrion Group, LLC Through Oasis Systems, LLC Top NAICS codes 541330 Engineering Services	$43,288,161	0.4%	Rank history: not on the FY2021–FY2024 lists and #42 in FY2025; new, not ranked in Jul 2024–Jun 2025.
39	Washington Metropolitan Area Transit Authority Top NAICS codes 485999 All Other Transit and Ground Passenger Transportation 485111 Mixed Mode Transit Systems	$43,100,550	0.4%	Rank history: not on the FY2021–FY2023 lists, #79 in FY2024 and #40 in FY2025; up 20 since Jul 2024–Jun 2025.
40	Iron Bow Technologies, LLC Top NAICS codes 334111 Electronic Computer Manufacturing 541511 Custom Computer Programming Services 541519 Other Computer Related Services	$42,017,220	0.4%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; down 2 since Jul 2024–Jun 2025.
41	Ensco Inc. Top NAICS codes 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$40,633,305	0.4%	Rank history: #64 in FY2021, #79 in FY2022, #32 in FY2023, #51 in FY2024 and #45 in FY2025; up 9 since Jul 2024–Jun 2025.
42	Microtechnologies LLC Top NAICS codes 541512 Computer Systems Design Services	$40,497,073	0.3%	Rank history: #54 in FY2021, #59 in FY2022, #52 in FY2023, #36 in FY2024 and #43 in FY2025; down 5 since Jul 2024–Jun 2025.
43	Stratacomm, LLC Top NAICS codes 541810 Advertising Agencies	$40,480,598	0.3%	Rank history: #17 in FY2021, #18 in FY2022, #17 in FY2023, #16 in FY2024 and #18 in FY2025; down 30 since Jul 2024–Jun 2025.
44	Crowley Government Services, Inc. Top NAICS codes 336611 Ship Building and Repairing	$39,714,834	0.3%	Rank history: not on the FY2021–FY2023 lists, #3 in FY2024 and #15 in FY2025; down 32 since Jul 2024–Jun 2025.
45	Honeywell International Inc. 3 awardees Top NAICS codes 236220 Commercial and Institutional Building Construction 541330 Engineering Services 561621 Security Systems Services (except Locksmiths)	$39,030,031	0.3%	Rank history: #98 in FY2021, #22 in FY2022, not on the FY2023–FY2024 lists and #26 in FY2025; new, not ranked in Jul 2024–Jun 2025.
46	Ddd-Dvg Joint Venture LLC Top NAICS codes 237310 Highway, Street, and Bridge Construction	$36,694,322	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
47	The Timken Company Through CGI Federal Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 611430 Professional and Management Development Training	$36,658,762	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
48	Lockheed Martin Corporation 3 awardees, including Lockheed Martin Services, LLC, Zeta Associates Inc. and Lockheed Martin Coherent Technologies, Inc. Top NAICS codes 541330 Engineering Services 334519 Other Measuring and Controlling Device Manufacturing 811219 Other Electronic and Precision Equipment Repair and Maintenance	$36,499,498	0.3%	Rank history: #25 in FY2021, #39 in FY2022, #46 in FY2023, #42 in FY2024 and #52 in FY2025; up 1 since Jul 2024–Jun 2025.
49	Strider Construction Co Inc. Top NAICS codes 237310 Highway, Street, and Bridge Construction	$36,477,636	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
50	Booz Allen Hamilton Holding Corporation 2 awardees, including Booz Allen Hamilton Inc. Top NAICS codes 541330 Engineering Services 541511 Custom Computer Programming Services 541611 Administrative Management and General Management Consulting Services	$36,021,602	0.3%	Rank history: #27 in FY2021, #27 in FY2022, #31 in FY2023, #28 in FY2024 and #41 in FY2025; down 15 since Jul 2024–Jun 2025.
51	Wells Global, LLC Top NAICS codes 238210 Electrical Contractors and Other Wiring Installation Contractors	$35,444,798	0.3%	Rank history: #49 in FY2021, #51 in FY2022, #24 in FY2023, #69 in FY2024 and #38 in FY2025; down 4 since Jul 2024–Jun 2025.
52	Uavionix Corp Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$35,266,691	0.3%	Rank history: not on the FY2021–FY2025 lists; up 132 since Jul 2024–Jun 2025.
53	Strongbridge LLC Top NAICS codes 541511 Custom Computer Programming Services	$34,260,514	0.3%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023, #45 in FY2024 and #46 in FY2025; down 19 since Jul 2024–Jun 2025.
54	M.a. Deatley Construction, Inc. Top NAICS codes 237310 Highway, Street, and Bridge Construction	$34,048,479	0.3%	Rank history: not on the FY2021 list, #23 in FY2022 and not on the FY2023–FY2025 lists; up 245 since Jul 2024–Jun 2025.
55	Central Southern Construction Corp. Top NAICS codes 237310 Highway, Street, and Bridge Construction	$33,759,868	0.3%	Rank history: not on the FY2021 list, #90 in FY2022, #75 in FY2023, not on the FY2024 list and #22 in FY2025; down 33 since Jul 2024–Jun 2025.
56	Serco Inc Top NAICS codes 488111 Air Traffic Control	$33,727,080	0.3%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023, #24 in FY2024 and #44 in FY2025; down 13 since Jul 2024–Jun 2025.
57	CGI Federal Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 611430 Professional and Management Development Training 541519 Other Computer Related Services	$32,194,462	0.3%	Rank history: not on the FY2021–FY2024 lists and #98 in FY2025; new, not ranked in Jul 2024–Jun 2025.
58	KBR Wyle Services LLC 2 awardees Top NAICS codes 541330 Engineering Services 561621 Security Systems Services (except Locksmiths)	$29,754,405	0.3%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; up 3 since Jul 2024–Jun 2025.
59	Regulus Group, LLC Top NAICS codes 541330 Engineering Services	$28,561,404	0.2%	Rank history: not on the FY2021 list, #74 in FY2022, #64 in FY2023, #54 in FY2024 and #51 in FY2025; down 3 since Jul 2024–Jun 2025.
60	Scalfo Electric Inc. Top NAICS codes 237130 Power and Communication Line and Related Structures Construction 236220 Commercial and Institutional Building Construction	$28,067,090	0.2%	Rank history: not on the FY2021–FY2024 lists and #54 in FY2025; new, not ranked in Jul 2024–Jun 2025.
61	ICF International Inc. 2 awardees, including ICF Incorporated, L.L.C. and Incentive Technology Group LLC Top NAICS codes 541513 Computer Facilities Management Services 541611 Administrative Management and General Management Consulting Services 541511 Custom Computer Programming Services	$27,454,199	0.2%	Rank history: not on the FY2021–FY2023 lists, #37 in FY2024 and #74 in FY2025; down 30 since Jul 2024–Jun 2025.
62	Evans Incorporated Top NAICS codes 541330 Engineering Services	$26,941,761	0.2%	Rank history: #35 in FY2021, #56 in FY2022, #68 in FY2023, #61 in FY2024 and #72 in FY2025; down 2 since Jul 2024–Jun 2025.
63	KLD Associates Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541330 Engineering Services	$26,811,870	0.2%	Rank history: #86 in FY2021, #65 in FY2022, #49 in FY2023, #40 in FY2024 and #53 in FY2025; new, not ranked in Jul 2024–Jun 2025.
64	Talton Marine Terminal, LLC Top NAICS codes 488390 Other Support Activities for Water Transportation 561210 Facilities Support Services	$26,717,963	0.2%	Rank history: not on the FY2021–FY2024 lists and #81 in FY2025; up 57 since Jul 2024–Jun 2025.
65	CI2 Aviation, Inc. Top NAICS codes 488111 Air Traffic Control	$25,906,011	0.2%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; up 92 since Jul 2024–Jun 2025.
66	A3 Technology Inc. Top NAICS codes 541330 Engineering Services	$25,680,056	0.2%	Rank history: #33 in FY2021, #47 in FY2022, #53 in FY2023, #39 in FY2024 and #49 in FY2025; down 21 since Jul 2024–Jun 2025.
67	Changeis, Inc. Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services	$25,548,889	0.2%	Rank history: #30 in FY2021, #38 in FY2022, #39 in FY2023, #38 in FY2024 and #57 in FY2025; down 16 since Jul 2024–Jun 2025.
68	Chickasaw Nation 6 awardees, including Technology Trends Group, LLC, CNI Manufacturing, LLC and Chickasaw Strategic Pointe, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 332311 Prefabricated Metal Building and Component Manufacturing 541330 Engineering Services	$24,984,675	0.2%	Rank history: not on the FY2021–FY2023 lists, #81 in FY2024 and #47 in FY2025; up 14 since Jul 2024–Jun 2025.
69	Estes Bros. Const. Inc. Top NAICS codes 237310 Highway, Street, and Bridge Construction	$24,871,549	0.2%	Rank history: #16 in FY2021, #28 in FY2022, #35 in FY2023, #23 in FY2024 and #34 in FY2025; down 41 since Jul 2024–Jun 2025.
70	Senture LLC Top NAICS codes 541519 Other Computer Related Services	$24,039,301	0.2%	Rank history: #48 in FY2021, not on the FY2022–FY2023 lists, #53 in FY2024 and #50 in FY2025; up 20 since Jul 2024–Jun 2025.
71	O & A Technical Services LLC Top NAICS codes 561210 Facilities Support Services	$23,968,891	0.2%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; up 85 since Jul 2024–Jun 2025.
72	Transportation Research Center Inc. Top NAICS codes 541380 Testing Laboratories and Services	$23,120,857	0.2%	Rank history: #43 in FY2021, #70 in FY2022, #40 in FY2023, #46 in FY2024 and #67 in FY2025; down 33 since Jul 2024–Jun 2025.
73	Data Comm for Business Inc. Top NAICS codes 334210 Telephone Apparatus Manufacturing	$22,560,205	0.2%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; new, not ranked in Jul 2024–Jun 2025.
74	Quecon, Inc. Top NAICS codes 541519 Other Computer Related Services 541611 Administrative Management and General Management Consulting Services	$22,257,374	0.2%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; down 5 since Jul 2024–Jun 2025.
75	Nana Regional Corporation, Inc. 4 awardees, including Five Rivers Analytics, LLC, Akima Global Logistics, LLC and Systems Intelligence, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 561499 All Other Business Support Services 334111 Electronic Computer Manufacturing	$21,826,496	0.2%	Rank history: not on the FY2021–FY2024 lists and #76 in FY2025; new, not ranked in Jul 2024–Jun 2025.
76	Cssi Inc. Top NAICS codes 541330 Engineering Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$21,552,890	0.2%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023, #59 in FY2024 and #71 in FY2025; down 21 since Jul 2024–Jun 2025.
77	Four Points Technology, L.L.C. Top NAICS codes 541519 Other Computer Related Services	$21,433,771	0.2%	Rank history: not on the FY2021–FY2023 lists, #77 in FY2024 and not on the FY2025 list; up 56 since Jul 2024–Jun 2025.
78	Tbp&Jj Worldwide Services, LLC Top NAICS codes 561210 Facilities Support Services	$21,143,594	0.2%	Rank history: not on the FY2021–FY2025 lists; up 119 since Jul 2024–Jun 2025.
79	Oftedal Construction, Inc. Top NAICS codes 237310 Highway, Street, and Bridge Construction	$21,139,487	0.2%	Rank history: not on the FY2021 list, #26 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
80	Emcor Group Inc. Through Emcor Government Services, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction 561210 Facilities Support Services	$20,866,558	0.2%	Rank history: not on the FY2021–FY2025 lists; up 199 since Jul 2024–Jun 2025.
81	Jet Support Services, Inc. Top NAICS codes 488190 Other Support Activities for Air Transportation 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing	$20,756,913	0.2%	Rank history: not on the FY2021–FY2023 lists, #88 in FY2024 and not on the FY2025 list; up 60 since Jul 2024–Jun 2025.
82	Pacific Layberthing South, LLC Top NAICS codes 488390 Other Support Activities for Water Transportation	$20,227,976	0.2%	Rank history: not on the FY2021 list, #76 in FY2022, not on the FY2023–FY2024 lists and #96 in FY2025; up 139 since Jul 2024–Jun 2025.
83	Maglez Engineerings & Contractors Corp Top NAICS codes 237310 Highway, Street, and Bridge Construction	$20,160,481	0.2%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; new, not ranked in Jul 2024–Jun 2025.
84	Groundswell Corporation Top NAICS codes 541512 Computer Systems Design Services	$19,935,732	0.2%	Rank history: #62 in FY2021, #60 in FY2022, not on the FY2023 list, #52 in FY2024 and #68 in FY2025; down 38 since Jul 2024–Jun 2025.
85	Afognak Native Corporation Through Shields Point LLC Top NAICS codes 561612 Security Guards and Patrol Services	$19,681,185	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
86	Cavan Solutions Inc. Top NAICS codes 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$19,470,845	0.2%	Rank history: not on the FY2021 list, #68 in FY2022, not on the FY2023 list, #70 in FY2024 and #64 in FY2025; down 29 since Jul 2024–Jun 2025.
87	V3Gate, LLC Top NAICS codes 541519 Other Computer Related Services	$19,295,757	0.2%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; new, not ranked in Jul 2024–Jun 2025.
88	Eaton Corporation Public Limited Company 2 awardees, including Eaton Corporation and Wright Line LLC Top NAICS codes 811210 Electronic and Precision Equipment Repair and Maintenance 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing 334419 Other Electronic Component Manufacturing	$19,253,788	0.2%	Rank history: #71 in FY2021, #89 in FY2022, #92 in FY2023, not on the FY2024 list and #82 in FY2025; new, not ranked in Jul 2024–Jun 2025.
89	ATAC Top NAICS codes 541330 Engineering Services 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$19,157,359	0.2%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2023, #71 in FY2024 and #73 in FY2025; down 24 since Jul 2024–Jun 2025.
90	E Corp Top NAICS codes 236220 Commercial and Institutional Building Construction 238210 Electrical Contractors and Other Wiring Installation Contractors	$18,700,929	0.2%	Rank history: not on the FY2021–FY2023 lists, #35 in FY2024 and #100 in FY2025; down 46 since Jul 2024–Jun 2025.
91	Vero Technical Support Inc Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$18,618,697	0.2%	Rank history: not on the FY2021–FY2023 lists, #84 in FY2024 and #80 in FY2025; up 8 since Jul 2024–Jun 2025.
92	Spatial Front Inc Top NAICS codes 541511 Custom Computer Programming Services 541519 Other Computer Related Services	$18,470,927	0.2%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2023, #32 in FY2024 and #66 in FY2025; down 56 since Jul 2024–Jun 2025.
93	Capital Group, LLC Top NAICS codes 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$18,448,729	0.2%	Rank history: not on the FY2021–FY2023 lists, #60 in FY2024 and #55 in FY2025; down 40 since Jul 2024–Jun 2025.
94	Discovery Energy, LLC Top NAICS codes 335312 Motor and Generator Manufacturing	$18,303,379	0.2%	Rank history: not on the FY2021–FY2025 lists; up 180 since Jul 2024–Jun 2025.
95	Allen Corporation of America, Inc. Top NAICS codes 611512 Flight Training	$17,861,012	0.2%	Rank history: #74 in FY2021, not on the FY2022 list, #90 in FY2023 and not on the FY2024–FY2025 lists; up 49 since Jul 2024–Jun 2025.
96	Bryant's Land and Development Industries, Inc. Top NAICS codes 237310 Highway, Street, and Bridge Construction	$17,012,973	0.1%	Rank history: #46 in FY2021, #63 in FY2022, #66 in FY2023 and not on the FY2024–FY2025 lists; up 2 since Jul 2024–Jun 2025.
97	Granite Construction Company Guam Through Granite Construction Company Top NAICS codes 237310 Highway, Street, and Bridge Construction	$16,701,981	0.1%	Rank history: not on the FY2021–FY2022 lists, #13 in FY2023, #12 in FY2024 and not on the FY2025 list; up 200 since Jul 2024–Jun 2025.
98	Keystone Shipping Services, Inc. Top NAICS codes 483111 Deep Sea Freight Transportation	$16,335,150	0.1%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; down 3 since Jul 2024–Jun 2025.
99	OCH Technologies, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541511 Custom Computer Programming Services	$16,097,811	0.1%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; down 18 since Jul 2024–Jun 2025.
100	Alliant Insurance Services, Inc. Top NAICS codes 524210 Insurance Agencies and Brokerages	$16,063,145	0.1%	Rank history: #63 in FY2021, #85 in FY2022, not on the FY2023 list, #64 in FY2024 and #91 in FY2025; down 24 since Jul 2024–Jun 2025.

Show 75 more

100 of 2,453 contractors listed here. See the rest on GovTribe.

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 $11.6 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Jul 2024–Jun 2025. "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.
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 Department of Transportation contractors in Jul 2025–Jun 2026?

1. L3Harris Technologies, Inc. ($1.35B), 2. RTX Corporation ($707M), 3. Indra Air Traffic, Inc. ($518M), 4. Rohde & Schwarz GMBH & Co. Kommanditgesellschaft ($443M), 5. Leidos Holdings, Inc. ($434M), 6. Science Applications International Corporation ($246M), 7. Parsons Corporation ($235M), 8. Frequentis Usa, Inc. ($212M), 9. Tetra Tech, Inc. ($163M), 10. Walsh Federal LLC ($158M).

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