Top 100 Defense Security Cooperation Agency Contractors, FY2021

Name: Top 100 Defense Security Cooperation Agency Contractors, FY2021
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Agency page on GovTribe

The top 10 won 64% of FY2021 Defense Security Cooperation Agency contract dollars

Contract obligations: $147,947,471 Net of deobligations, by the Defense Security Cooperation Agency and its offices
Contractors: 124 Parent companies with an obligation
Largest contractor: Institute for Defense Analyses $38.3 million, 22.6% of obligations
Data as of: Oct 14, 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	Institute for Defense Analyses Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$38,271,846	22.6%	Rank history: #1 in FY2022, #47 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
2	Infopoint LLC Top NAICS codes 541511 Custom Computer Programming Services	$12,244,960	7.2%	Rank history: #5 in FY2022, #12 in FY2023, #6 in FY2024 and #6 in FY2025; new, not ranked in FY2020.
3	Tetra Tech, Inc. Through Management Systems International, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$9,766,165	5.8%	Rank history: #7 in FY2022, #4 in FY2023, #11 in FY2024 and #36 in FY2025; up 14 since FY2020.
4	Deloitte LLP 2 awardees, including Deloitte & Touche LLP and Deloitte Consulting LLP Top NAICS codes 541211 Offices of Certified Public Accountants 541611 Administrative Management and General Management Consulting Services	$8,982,018	5.3%	Rank history: #4 in FY2022, #9 in FY2023, #5 in FY2024 and #3 in FY2025; up 119 since FY2020.
5	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top NAICS codes 541330 Engineering Services 541990 All Other Professional, Scientific, and Technical Services	$7,886,365	4.7%	Rank history: #2 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; down 4 since FY2020.
6	Science Applications International Corporation Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$7,413,840	4.4%	Rank history: #23 in FY2022, #17 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
7	Act1 Federal LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$6,756,979	4.0%	Rank history: #6 in FY2022, #5 in FY2023, #10 in FY2024 and #41 in FY2025; up 6 since FY2020.
8	Information Gateways Inc. Top NAICS codes 541512 Computer Systems Design Services	$6,106,730	3.6%	Rank history: not on the FY2022–FY2025 lists; down 2 since FY2020.
9	Teya Enterprises LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$5,976,297	3.5%	Rank history: #8 in FY2022, #6 in FY2023, not on the FY2024 list and #45 in FY2025; unchanged since FY2020.
10	Seneca Global Services LLC Top NAICS codes 541512 Computer Systems Design Services	$4,928,386	2.9%	Rank history: #10 in FY2022, #33 in FY2023, #33 in FY2024 and not on the FY2025 list; down 2 since FY2020.
11	Tier 1 Performance Solutions LLC Top NAICS codes 541511 Custom Computer Programming Services	$3,696,630	2.2%	Rank history: #20 in FY2022, #20 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
12	Kearney & Company, P.C. Top NAICS codes 541211 Offices of Certified Public Accountants	$2,779,376	1.6%	Rank history: not on the FY2022–FY2025 lists; up 40 since FY2020.
13	The Mitre Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,750,002	1.6%	Rank history: not on the FY2022–FY2025 lists; down 11 since FY2020.
14	Chickasaw Management Services, LLC Top NAICS codes 541511 Custom Computer Programming Services	$2,710,729	1.6%	Rank history: #19 in FY2022, #21 in FY2023, #18 in FY2024 and not on the FY2025 list; up 10 since FY2020.
15	Index Systems Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,149,264	1.3%	Rank history: not on the FY2022–FY2025 lists; up 4 since FY2020.
16	Civicactions, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$2,146,521	1.3%	Rank history: #18 in FY2022, #19 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
17	Vectrus Systems Corporation Through V2X Systems LLC Top NAICS codes 541519 Other Computer Related Services	$1,763,200	1.0%	Rank history: #33 in FY2022, #25 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.
18	The Chenega Corporation Through Chenega Decision Sciences LLC Top NAICS codes 541519 Other Computer Related Services	$1,682,967	1.0%	Rank history: #49 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
19	Organizational Development Resource Group, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,642,311	1.0%	Rank history: #25 in FY2022, #26 in FY2023, #12 in FY2024 and #17 in FY2025; up 17 since FY2020.
20	The Cumberland Group, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,601,888	0.9%	Rank history: #15 in FY2022, #14 in FY2023, #21 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
21	Sterling Computers Corporation Top NAICS codes 541519 Other Computer Related Services	$1,563,661	0.9%	Rank history: #96 in FY2022, #87 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2020.
22	Commonwealth Trading Partners Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$1,499,388	0.9%	Rank history: #35 in FY2022 and not on the FY2023–FY2025 lists; up 22 since FY2020.
23	M-Medientechnik GMBH Top NAICS codes 334310 Audio and Video Equipment Manufacturing 541519 Other Computer Related Services	$1,498,016	0.9%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
24	Garmisch Lodging/ Marshall Center Hotel Top NAICS codes 721110 Hotels (except Casino Hotels) and Motels	$1,389,900	0.8%	Rank history: #29 in FY2022 and not on the FY2023–FY2025 lists; up 15 since FY2020.
25	Mckellar Corporation Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$1,378,106	0.8%	Rank history: #26 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
26	Koniag, Inc. Through Pacarctic, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,198,999	0.7%	Rank history: #27 in FY2022, #31 in FY2023, #59 in FY2024 and not on the FY2025 list; up 7 since FY2020.
27	Four LLC Top NAICS codes 541519 Other Computer Related Services	$1,120,698	0.7%	Rank history: #30 in FY2022, #32 in FY2023, #30 in FY2024 and #28 in FY2025; unchanged since FY2020.
28	Huntington Ingalls Industries, Inc. Through HII Mission Technologies Corp Top NAICS codes 611710 Educational Support Services	$1,106,962	0.7%	Rank history: #13 in FY2022, #8 in FY2023, #2 in FY2024 and #4 in FY2025; up 19 since FY2020.
29	DLT Solutions LLC Top NAICS codes 334111 Electronic Computer Manufacturing 511210 Software Publishers 541519 Other Computer Related Services	$1,047,455	0.6%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
30	SHR Consulting Group LLC Top NAICS codes 541511 Custom Computer Programming Services	$1,010,656	0.6%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
31	Integrated Data Services, LLC Top NAICS codes 541511 Custom Computer Programming Services 541519 Other Computer Related Services	$917,610	0.5%	Rank history: #32 in FY2022, #39 in FY2023, #31 in FY2024 and #52 in FY2025; up 3 since FY2020.
32	DJS Financial Services, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$864,367	0.5%	Rank history: not on the FY2022–FY2023 lists, #47 in FY2024 and #31 in FY2025; up 3 since FY2020.
33	Blackboard Inc. Top NAICS codes 511210 Software Publishers	$853,738	0.5%	Rank history: #36 in FY2022, #38 in FY2023, #44 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
34	Washington Business Dynamics, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$840,378	0.5%	Rank history: #31 in FY2022, #34 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2020.
35	Target Media-Mid Atlantic Inc. Top NAICS codes 541511 Custom Computer Programming Services	$839,437	0.5%	Rank history: #37 in FY2022, #56 in FY2023, #29 in FY2024 and #37 in FY2025; up 6 since FY2020.
36	Kallman Worldwide Inc. Top NAICS codes 561920 Convention and Trade Show Organizers	$740,415	0.4%	Rank history: #39 in FY2022, #22 in FY2023, #38 in FY2024 and #27 in FY2025; up 19 since FY2020.
37	Decypher Technologies Ltd Top NAICS codes 512290 Other Sound Recording Industries	$613,279	0.4%	Rank history: #48 in FY2022 and not on the FY2023–FY2025 lists; up 12 since FY2020.
38	Logistics Management Institute Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$593,885	0.4%	Rank history: #12 in FY2022, #10 in FY2023, #39 in FY2024 and #58 in FY2025; down 18 since FY2020.
39	The CNA Corporation Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$590,646	0.3%	Rank history: #41 in FY2022, #28 in FY2023, #37 in FY2024 and #40 in FY2025; down 13 since FY2020.
40	DKW Communications Inc. Top NAICS codes 541512 Computer Systems Design Services	$532,842	0.3%	Rank history: not on the FY2022–FY2025 lists; up 3 since FY2020.
41	Veterans Construction Coalition LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$520,537	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
42	Silver Chain Kuwait Company Top NAICS codes 561210 Facilities Support Services	$496,294	0.3%	Rank history: #42 in FY2022, #41 in FY2023, #40 in FY2024 and #43 in FY2025; new, not ranked in FY2020.
43	Blackstone Consulting, Inc. Top NAICS codes 722310 Food Service Contractors	$480,093	0.3%	Rank history: #28 in FY2022, #24 in FY2023, #19 in FY2024 and #30 in FY2025; down 20 since FY2020.
44	Culmen International, LLC Top NAICS codes 611630 Language Schools 561110 Office Administrative Services	$473,492	0.3%	Rank history: #43 in FY2022, #43 in FY2023, #41 in FY2024 and #34 in FY2025; up 1 since FY2020.
45	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers	$446,301	0.3%	Rank history: #16 in FY2022, #27 in FY2023, #24 in FY2024 and #24 in FY2025; down 35 since FY2020.
46	Dell Federal Systems L.P. 2 awardees, including Dell Marketing L.P. Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$434,196	0.3%	Rank history: #46 in FY2022, #45 in FY2023, #55 in FY2024 and not on the FY2025 list; up 11 since FY2020.
47	Quality Systems Management, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$275,616	0.2%	Rank history: #50 in FY2022, #59 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2020.
48	Stellar Innovations & Solutions Inc. Top NAICS codes 541519 Other Computer Related Services	$265,300	0.2%	Rank history: #60 in FY2022, #61 in FY2023, #80 in FY2024 and #64 in FY2025; up 23 since FY2020.
49	X Corp Solutions Inc. Top NAICS codes 611710 Educational Support Services	$242,840	0.1%	Rank history: not on the FY2022–FY2025 lists; down 24 since FY2020.
50	Uungwana Institute Limited Top NAICS codes 423450 Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers 446199 All Other Health and Personal Care Stores	$213,651	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
51	World Wide Technology Holding Co. Inc. Through World Wide Technology LLC Top NAICS codes 541519 Other Computer Related Services	$199,964	0.1%	Rank history: #44 in FY2022 and not on the FY2023–FY2025 lists; down 9 since FY2020.
52	New TECH Solutions, Inc. Top NAICS codes 334111 Electronic Computer Manufacturing 541519 Other Computer Related Services	$190,233	0.1%	Rank history: #34 in FY2022, #49 in FY2023, #26 in FY2024 and #20 in FY2025; up 30 since FY2020.
53	RND Win Holdings, LLC Top NAICS codes 561920 Convention and Trade Show Organizers	$183,796	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
54	Advanced Computer Concepts, Inc. Top NAICS codes 541519 Other Computer Related Services	$181,921	0.1%	Rank history: not on the FY2022–FY2025 lists; up 20 since FY2020.
55	Advanced Decision Vectors LLC Top NAICS codes 561110 Office Administrative Services	$181,194	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
56	In-Tec Construction Co. Top NAICS codes 236220 Commercial and Institutional Building Construction	$175,917	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
57	A-Tech Systems, Inc. Top NAICS codes 541512 Computer Systems Design Services	$158,666	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
58	N R G Building Services, LLC Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors 238210 Electrical Contractors and Other Wiring Installation Contractors	$148,700	0.1%	Rank history: #74 in FY2022 and not on the FY2023–FY2025 lists; up 43 since FY2020.
59	Vertex Aerospace LLC Through V2X Aerospace LLC Top NAICS codes 488190 Other Support Activities for Air Transportation	$124,080	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
60	Starlight Corp Top NAICS codes 561720 Janitorial Services	$99,937	0.1%	Rank history: #71 in FY2022, not on the FY2023–FY2024 lists and #70 in FY2025; new, not ranked in FY2020.
61	Trivision Inc. Top NAICS codes 541430 Graphic Design Services	$98,676	0.1%	Rank history: #72 in FY2022, #60 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
62	UNI Manpower Resources and General Services Inc. Top NAICS codes 339113 Surgical Appliance and Supplies Manufacturing	$96,153	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
63	Rainbow Language In Business Ltd Top NAICS codes 611630 Language Schools	$94,220	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
64	Architechture Solutions LLC Top NAICS codes 541519 Other Computer Related Services	$93,990	0.1%	Rank history: not on the FY2022–FY2023 lists, #88 in FY2024 and not on the FY2025 list; up 45 since FY2020.
65	Mobile Telecommunications Company (K.s.c.) Top NAICS codes 517312 Wireless Telecommunications Carriers (except Satellite)	$77,208	<0.1%	Rank history: #77 in FY2022, #90 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
66	E-Logic, Inc. Top NAICS codes 334111 Electronic Computer Manufacturing	$75,830	<0.1%	Rank history: not on the FY2022 list, #40 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
67	Ebsco Industries Inc. Top NAICS codes 511120 Periodical Publishers	$70,315	<0.1%	Rank history: #78 in FY2022, #83 in FY2023, #91 in FY2024 and #77 in FY2025; new, not ranked in FY2020.
68	Zahra Hamidi Top NAICS codes 611630 Language Schools	$68,952	<0.1%	Rank history: #80 in FY2022, #81 in FY2023, #82 in FY2024 and #80 in FY2025; up 5 since FY2020.
69	Minburn Technology Group, LLC Top NAICS codes 541519 Other Computer Related Services	$62,950	<0.1%	Rank history: not on the FY2022 list, #65 in FY2023, #87 in FY2024 and #84 in FY2025; new, not ranked in FY2020.
70	Lumen Technologies, Inc. Through Level 3 Communications, LLC Top NAICS codes 517311 Wired Telecommunications Carriers 517110 Wired Telecommunications Carriers	$61,290	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
71	PBG Consulting, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$60,889	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 60 since FY2020.
72	Olena Simon Top NAICS codes 611630 Language Schools	$60,206	<0.1%	Rank history: #86 in FY2022, #92 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.
73	Dynamo Technologies, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$59,992	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 14 since FY2020.
74	Tamir Sinai Top NAICS codes 611710 Educational Support Services	$59,323	<0.1%	Rank history: #99 in FY2022 and not on the FY2023–FY2025 lists; down 9 since FY2020.
75	Veronique Garin Top NAICS codes 611630 Language Schools	$57,390	<0.1%	Rank history: #85 in FY2022 and not on the FY2023–FY2025 lists; up 3 since FY2020.
76	Dubai Enterprises Company Top NAICS codes 423450 Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers	$57,310	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
77	Abs Alpha Group GMBH Top NAICS codes 337214 Office Furniture (except Wood) Manufacturing	$56,228	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
78	Cambridge Information Group Inc. Through Proquest LLC Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals	$50,991	<0.1%	Rank history: not on the FY2022 list, #100 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2020.
79	Blue TECH Inc. Top NAICS codes 541519 Other Computer Related Services	$50,889	<0.1%	Rank history: #64 in FY2022, #62 in FY2023, #76 in FY2024 and #78 in FY2025; up 6 since FY2020.
80	Vladimir Mehling Top NAICS codes 611630 Language Schools	$50,457	<0.1%	Rank history: #93 in FY2022, #97 in FY2023, #95 in FY2024 and #88 in FY2025; up 12 since FY2020.
81	Natalia Rezanova Top NAICS codes 611630 Language Schools	$49,844	<0.1%	Rank history: #95 in FY2022 and not on the FY2023–FY2025 lists; up 8 since FY2020.
82	Presidio Government Solutions LLC Top NAICS codes 541519 Other Computer Related Services	$48,331	<0.1%	Rank history: #55 in FY2022, #63 in FY2023 and not on the FY2024–FY2025 lists; down 19 since FY2020.
83	Diltex, Inc. Top NAICS codes 334111 Electronic Computer Manufacturing	$48,255	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
84	Enterprise Technology Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$42,734	<0.1%	Rank history: #88 in FY2022, not on the FY2023–FY2024 lists and #87 in FY2025; up 36 since FY2020.
85	Andreas Christ Spedition UND Moebeltransport GMBH Top NAICS codes 484210 Used Household and Office Goods Moving	$42,203	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
86	Integration Technologies Group, Inc. Top NAICS codes 541519 Other Computer Related Services	$38,726	<0.1%	Rank history: #66 in FY2022 and not on the FY2023–FY2025 lists; down 33 since FY2020.
87	Sirius Computer Solutions, LLC Through Sirius Federal LLC Top NAICS codes 541519 Other Computer Related Services	$35,993	<0.1%	Rank history: #98 in FY2022 and not on the FY2023–FY2025 lists; down 36 since FY2020.
88	Deutsche Telekom Business Solutions GMBH 2 awardees, including T-Systems International GMBH Top NAICS codes 517311 Wired Telecommunications Carriers 517919 All Other Telecommunications	$35,380	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 14 since FY2020.
89	Cap Divertissement Top NAICS codes 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers	$35,232	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
90	B.F. Saul Property Company Top NAICS codes 721110 Hotels (except Casino Hotels) and Motels	$31,248	<0.1%	Rank history: #40 in FY2022, #37 in FY2023, #51 in FY2024 and #65 in FY2025; new, not ranked in FY2020.
91	A.p. Inspections, L.L.C. Top NAICS codes 541614 Process, Physical Distribution, and Logistics Consulting Services	$26,464	<0.1%	Rank history: #73 in FY2022, #80 in FY2023, #94 in FY2024 and #73 in FY2025; down 11 since FY2020.
92	American Council On Education Top NAICS codes 813910 Business Associations	$24,100	<0.1%	Rank history: #91 in FY2022, not on the FY2023–FY2024 lists and #98 in FY2025; new, not ranked in FY2020.
93	Lyme Computer Systems, Inc. Top NAICS codes 541519 Other Computer Related Services	$24,092	<0.1%	Rank history: #65 in FY2022 and not on the FY2023–FY2025 lists; up 7 since FY2020.
94	Starhub Ltd. Top NAICS codes 517911 Telecommunications Resellers	$19,531	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 5 since FY2020.
95	Mythics, LLC Through Emergent, LLC Top NAICS codes 511210 Software Publishers	$19,152	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 11 since FY2020.
96	Northwind Ventures Inc. Top NAICS codes 511210 Software Publishers	$18,719	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 12 since FY2020.
97	American Wordata, Inc. Top NAICS codes 541519 Other Computer Related Services	$18,104	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
98	Bahfed Corp Top NAICS codes 541519 Other Computer Related Services	$17,855	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	The Association of the United States Army Top NAICS codes 561920 Convention and Trade Show Organizers	$16,800	<0.1%	Rank history: not on the FY2022 list, #66 in FY2023, not on the FY2024 list and #62 in FY2025; down 38 since FY2020.
100	Federal Resources Corporation Top NAICS codes 541519 Other Computer Related Services	$16,406	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.

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100 of 124 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 $169 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2020. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2020 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 Defense Security Cooperation Agency contractors in FY2021?

1. Institute for Defense Analyses ($38.3M), 2. Infopoint LLC ($12.2M), 3. Tetra Tech, Inc. ($9.77M), 4. Deloitte LLP ($8.98M), 5. Booz Allen Hamilton Holding Corporation ($7.89M), 6. Science Applications International Corporation ($7.41M), 7. Act1 Federal LLC ($6.76M), 8. Information Gateways Inc. ($6.11M), 9. Teya Enterprises LLC ($5.98M), 10. Seneca Global Services LLC ($4.93M).

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