Top 100 Contractors in NAICS 51: Information, FY2023

Name: Top 100 Contractors in NAICS 51: Information, FY2023
Creator: GovTribe

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

The top 10 won 44% of FY2023 NAICS 51 contract dollars

Contract obligations: $16,157,651,150 Net of deobligations, by contracts coded NAICS 51 or a code under it
Contractors: 5,079 Parent companies with an obligation
Largest contractor: Dell Federal Systems L.P. $2.34 billion, 13.6% of obligations
Data as of: Oct 14, 2026

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

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Dell Federal Systems L.P. 5 awardees, including Dell Marketing L.P. and EMC Corporation Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) Army (Department of the Army)	$2,344,771,481	13.6%	Rank history: #3 in FY2021, #1 in FY2022, #4 in FY2024 and not on the FY2025 list; unchanged since FY2022.
2	At&T Inc. 45 awardees, including At&T Enterprises, LLC, Att Mobility LLC and At&T Technical Services Company, Inc. Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) DOJ (Department of Justice)	$1,166,300,566	6.8%	Rank history: #2 in FY2021, #2 in FY2022, #3 in FY2024 and #3 in FY2025; unchanged since FY2022.
3	Carahsoft Technology Corp Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) Army (Department of the Army)	$1,091,930,184	6.4%	Rank history: #1 in FY2021, #3 in FY2022, #2 in FY2024 and #2 in FY2025; unchanged since FY2022.
4	Verizon Communications Inc. 20 awardees, including Verizon Business Network Services LLC, Cellco Partnership and MCI Communications Services LLC Top agencies SSA (Social Security Administration) Army (Department of the Army) HHS (Department of Health and Human Services)	$634,387,934	3.7%	Rank history: #4 in FY2021, #4 in FY2022, #85 in FY2024 and not on the FY2025 list; unchanged since FY2022.
5	HP Enterprise Services LLC 10 awardees, including Peraton Inc., Peraton Enterprise Solutions LLC and Peraton Technology Services Inc. Top agencies NASA (National Aeronautics and Space Administration) Commerce (Department of Commerce) DHS (Department of Homeland Security)	$596,587,201	3.5%	Rank history: #6 in FY2021, #5 in FY2022, #31 in FY2024 and not on the FY2025 list; unchanged since FY2022.
6	Lumen Technologies, Inc. 29 awardees, including Lumen Technologies Government Solutions, Inc., Level 3 Communications, LLC and Level 3 Telecom Holdings, LLC Top agencies DISA (Defense Information Systems Agency) VA (Department of Veterans Affairs) SSA (Social Security Administration)	$514,967,532	3.0%	Rank history: #8 in FY2021, #7 in FY2022, #9 in FY2024 and not on the FY2025 list; up 1 since FY2022.
7	Palantir Technologies Inc. 2 awardees, including Palantir USG Inc. Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) Army (Department of the Army)	$380,777,934	2.2%	Rank history: #12 in FY2021, #8 in FY2022, #6 in FY2024 and #4 in FY2025; up 1 since FY2022.
8	General Dynamics Corporation 9 awardees, including General Dynamics Information Technology, Inc., General Dynamics Mission Systems, Inc. and Praxis Engineering Technologies LLC Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) DOT (Department of Transportation)	$361,669,878	2.1%	Rank history: #5 in FY2021, #13 in FY2022, #8 in FY2024 and #16 in FY2025; up 5 since FY2022.
9	Leidos Holdings, Inc. 9 awardees, including Leidos, Inc. and Leidos Digital Solutions Inc. Top agencies DOT (Department of Transportation) HHS (Department of Health and Human Services) Army (Department of the Army)	$307,350,132	1.8%	Rank history: #11 in FY2021, #9 in FY2022, #12 in FY2024 and #17 in FY2025; unchanged since FY2022.
10	CACI International Inc. 6 awardees, including Caci Nss, LLC and LGS Innovations LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$238,449,354	1.4%	Rank history: #7 in FY2021, #12 in FY2022, #53 in FY2024 and #14 in FY2025; up 2 since FY2022.
11	Reed Elsevier Inc. 8 awardees, including Reed Technology and Information Services LLC, Elsevier B.V. and Matthew Bender & Company Inc. Top agencies Commerce (Department of Commerce) DOJ (Department of Justice) HHS (Department of Health and Human Services)	$213,406,138	1.2%	Rank history: #10 in FY2021, #10 in FY2022, #41 in FY2024 and not on the FY2025 list; down 1 since FY2022.
12	Minburn Technology Group, LLC Top agencies DISA (Defense Information Systems Agency) USSOCOM (United States Special Operations Command) Treasury (Department of the Treasury)	$177,505,521	1.0%	Rank history: #16 in FY2021, #16 in FY2022, #10 in FY2024 and #8 in FY2025; up 4 since FY2022.
13	DRS Global Enterprise Solutions Inc Through Global Enterprise Solutions, Inc. Top agencies USSOCOM (United States Special Operations Command) Army (Department of the Army) USAF (Department of the Air Force)	$166,758,207	1.0%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 145 since FY2022.
14	Advantaged Solutions, LLC Top agencies DLA (Defense Logistics Agency) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$160,927,158	0.9%	Rank history: #30 in FY2021, #11 in FY2022, #11 in FY2024 and #10 in FY2025; down 3 since FY2022.
15	Lockheed Martin Corporation 8 awardees, including Lockheed Martin Services, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DOJ (Department of Justice)	$158,484,426	0.9%	Rank history: #21 in FY2021, #15 in FY2022, #14 in FY2024 and #18 in FY2025; unchanged since FY2022.
16	International Business Machines Corporation 4 awardees Top agencies VA (Department of Veterans Affairs) Treasury (Department of the Treasury) HHS (Department of Health and Human Services)	$149,930,694	0.9%	Rank history: #23 in FY2021, #26 in FY2022, #19 in FY2024 and #12 in FY2025; up 10 since FY2022.
17	Environmental Systems Research Institute, Inc. Top agencies Army (Department of the Army) USDA (Department of Agriculture) Navy (Department of the Navy)	$144,017,387	0.8%	Rank history: #25 in FY2021, #20 in FY2022, #16 in FY2024 and #22 in FY2025; up 3 since FY2022.
18	The Boeing Company 9 awardees, including Jeppesen Foreflight, Inc., Cogitan LLC and Tapestry Solutions, Inc. Top agencies USAF (Department of the Air Force) DISA (Defense Information Systems Agency) Navy (Department of the Navy)	$140,400,014	0.8%	Rank history: #43 in FY2021, #22 in FY2022, #32 in FY2024 and #33 in FY2025; up 4 since FY2022.
19	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$116,637,089	0.7%	Rank history: #35 in FY2021, #29 in FY2022, #21 in FY2024 and #79 in FY2025; up 10 since FY2022.
20	Iridium Satellite LLC 3 awardees, including Iridium Government Services LLC Top agencies DISA (Defense Information Systems Agency)	$114,983,730	0.7%	Rank history: #13 in FY2021, #30 in FY2022 and not on the FY2024–FY2025 lists; up 10 since FY2022.
21	Viasat Inc. 2 awardees, including Rignet, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$113,097,286	0.7%	Rank history: #27 in FY2021, #17 in FY2022, #29 in FY2024 and #30 in FY2025; down 4 since FY2022.
22	Four LLC Top agencies Army (Department of the Army) DOJ (Department of Justice) HHS (Department of Health and Human Services)	$103,096,308	0.6%	Rank history: #22 in FY2021, #14 in FY2022, #34 in FY2024 and #52 in FY2025; down 8 since FY2022.
23	Stratos Government Services, Inc. Through Inmarsat Government, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) Commerce (Department of Commerce)	$102,759,860	0.6%	Rank history: #26 in FY2021, #18 in FY2022, #84 in FY2024 and not on the FY2025 list; down 5 since FY2022.
24	Widepoint Corporation Through Widepoint Integrated Solutions Corp Top agencies DHS (Department of Homeland Security) FCC (Federal Communications Commission) HHS (Department of Health and Human Services)	$93,842,776	0.5%	Rank history: #42 in FY2021, #36 in FY2022, #28 in FY2024 and not on the FY2025 list; up 12 since FY2022.
25	SMS Data Products Group Inc. Top agencies USAF (Department of the Air Force)	$92,951,793	0.5%	Rank history: #29 in FY2021, #23 in FY2022, #44 in FY2024 and not on the FY2025 list; down 2 since FY2022.
26	Accenture Federal Services LLC 2 awardees Top agencies Army (Department of the Army)	$87,941,287	0.5%	Rank history: #33 in FY2021, #28 in FY2022, #18 in FY2024 and #21 in FY2025; up 2 since FY2022.
27	Amazon.com, Inc. 2 awardees, including Amazon Web Services, Inc. Top agencies Navy (Department of the Navy) GSA (General Services Administration) DISA (Defense Information Systems Agency)	$81,977,853	0.5%	Rank history: #65 in FY2021, not on the FY2022 list, #67 in FY2024 and not on the FY2025 list; up 82 since FY2022.
28	SES Government Solutions Inc. Through SES Space & Defense, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) USAGM (US Agency for Global Media)	$81,842,384	0.5%	Rank history: #32 in FY2021, #44 in FY2022, #52 in FY2024 and not on the FY2025 list; up 16 since FY2022.
29	Sierra Nevada Company, LLC 3 awardees Top agencies Army (Department of the Army) DCSA (Defense Counterintelligence and Security Agency) USAF (Department of the Air Force)	$80,416,674	0.5%	Rank history: #53 in FY2021, #24 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
30	Intelligent Waves LLC Top agencies USAF (Department of the Air Force)	$79,590,363	0.5%	Rank history: not on the FY2021 list, #66 in FY2022, #79 in FY2024 and not on the FY2025 list; up 36 since FY2022.
31	Relx Inc 8 awardees, including Elsevier Inc., Elsevier B.V. and Lexisnexis Risk Solutions Inc. Top agencies DCSA (Defense Counterintelligence and Security Agency) DHS (Department of Homeland Security) DOJ (Department of Justice)	$78,821,920	0.5%	Rank history: not on the FY2021 list, #92 in FY2022, #30 in FY2024 and #13 in FY2025; up 61 since FY2022.
32	Indyne, Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) MDA (DOD Missile Defense Agency)	$78,568,710	0.5%	Rank history: #44 in FY2021, #33 in FY2022, #35 in FY2024 and #28 in FY2025; up 1 since FY2022.
33	Northrop Grumman Corporation 13 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) DOT (Department of Transportation) NASA (National Aeronautics and Space Administration)	$77,725,731	0.5%	Rank history: #20 in FY2021, #21 in FY2022, #48 in FY2024 and #94 in FY2025; down 12 since FY2022.
34	L3Harris Technologies, Inc. 9 awardees, including L3Harris Technologies Integrated Systems L.P., L3 Technologies, Inc. and NV5 Geospatial Solutions, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$77,011,762	0.4%	Rank history: #31 in FY2021, #25 in FY2022, #25 in FY2024 and #27 in FY2025; down 9 since FY2022.
35	Manhattan Telecommunications Corporation LLC Top agencies SSA (Social Security Administration) GSA (General Services Administration) DISA (Defense Information Systems Agency)	$72,006,921	0.4%	Rank history: #68 in FY2021, #55 in FY2022, #39 in FY2024 and #48 in FY2025; up 20 since FY2022.
36	Govcio, LLC Top agencies VA (Department of Veterans Affairs)	$70,091,977	0.4%	Rank history: not on the FY2021 list, #41 in FY2022, #42 in FY2024 and #31 in FY2025; up 5 since FY2022.
37	Thomson Reuters (Tax & Accounting) Inc. 4 awardees, including West Publishing Corporation and Thomson Reuters (Markets) LLC Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security) Treasury (Department of the Treasury)	$68,596,209	0.4%	Rank history: #38 in FY2021, #27 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
38	Pfsweb Inc. Through Priority Fulfillment Services, Inc. Top agencies Treasury (Department of the Treasury)	$64,223,188	0.4%	Rank history: #64 in FY2021, #62 in FY2022, #60 in FY2024 and not on the FY2025 list; up 24 since FY2022.
39	Kbr, Inc. 2 awardees, including KBR Wyle Services, LLC Top agencies NASA (National Aeronautics and Space Administration) Commerce (Department of Commerce) Army (Department of the Army)	$59,992,954	0.3%	Rank history: #49 in FY2021, #43 in FY2022 and not on the FY2024–FY2025 lists; up 4 since FY2022.
40	Fors Marsh Group LLC Top agencies HHS (Department of Health and Human Services)	$56,554,811	0.3%	Rank history: #14 in FY2021, #6 in FY2022 and not on the FY2024–FY2025 lists; down 34 since FY2022.
41	CA Inc. Top agencies SSA (Social Security Administration) DISA (Defense Information Systems Agency)	$56,285,707	0.3%	Rank history: #36 in FY2021, #34 in FY2022, #96 in FY2024 and not on the FY2025 list; down 7 since FY2022.
42	Dataminr, Inc. Top agencies USAF (Department of the Air Force) AOUSC (Administrative Office of the U.S. Courts) HHS (Department of Health and Human Services)	$55,010,662	0.3%	Rank history: #37 in FY2021, #38 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
43	Consulting Services Group, LLC Top agencies Army (Department of the Army)	$54,030,158	0.3%	Rank history: #96 in FY2021, #74 in FY2022, #38 in FY2024 and #29 in FY2025; up 31 since FY2022.
44	Artel LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) DISA (Defense Information Systems Agency)	$53,540,086	0.3%	Rank history: #46 in FY2021, #48 in FY2022, #36 in FY2024 and #55 in FY2025; up 4 since FY2022.
45	Abacus Technology Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$52,843,449	0.3%	Rank history: #45 in FY2021, #47 in FY2022, #51 in FY2024 and not on the FY2025 list; up 2 since FY2022.
46	Advanced Technology Systems Inc. Through Salient Federal Solutions, Inc. Top agencies Army (Department of the Army)	$51,880,094	0.3%	Rank history: #48 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 98 since FY2022.
47	Koniag, Inc. 4 awardees, including Digitized Schematic Solutions LLC, Kadiak LLC and Arlluk Technology Solutions LLC Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency) OSD (Office of the Secretary of Defense)	$50,121,631	0.3%	Rank history: #93 in FY2021, #59 in FY2022, #70 in FY2024 and not on the FY2025 list; up 12 since FY2022.
48	Thomas Scientific LLC 5 awardees, including Unison Software Inc., Hirevue Inc. and Unison Cost Engineering LLC Top agencies HHS (Department of Health and Human Services) DOT (Department of Transportation) DOL (Department of Labor)	$49,948,500	0.3%	Rank history: #73 in FY2021, #49 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
49	Avaya Federal Solutions Inc. Top agencies SSA (Social Security Administration)	$49,558,258	0.3%	Rank history: #76 in FY2021, #42 in FY2022, #83 in FY2024 and not on the FY2025 list; down 7 since FY2022.
50	BAE Systems PLC 4 awardees, including BAE Systems Technology Solutions & Services Inc., BAE Systems Onearc Usa, Inc. and BAE Systems Information and Electronic Systems Integration Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$46,926,563	0.3%	Rank history: #75 in FY2021, #69 in FY2022 and not on the FY2024–FY2025 lists; up 19 since FY2022.
51	Westat, Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$46,823,448	0.3%	Rank history: #54 in FY2021, #53 in FY2022, #54 in FY2024 and #83 in FY2025; up 2 since FY2022.
52	Accenture Inc. Through Accenture Federal Services LLC Top agencies USAF (Department of the Air Force) SSA (Social Security Administration) Army (Department of the Army)	$46,474,243	0.3%	Rank history: not on the FY2021 list, #94 in FY2022 and not on the FY2024–FY2025 lists; up 42 since FY2022.
53	Oil Price Information Service LLC 6 awardees, including IHS Global Inc., R.l. Polk & Co and Markit North America Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DOI (Department of the Interior)	$44,507,192	0.3%	Rank history: #57 in FY2021, #56 in FY2022 and not on the FY2024–FY2025 lists; up 3 since FY2022.
54	National Capitol Contracting LLC 24 awardees, including Comcast Government Services LLC, Comcast Business Communications, LLC and Universal City Studios Productions LLLP Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$43,964,625	0.3%	Rank history: #79 in FY2021, #82 in FY2022 and not on the FY2024–FY2025 lists; up 28 since FY2022.
55	Full Spectrum Operations LLC Top agencies USAF (Department of the Air Force)	$43,195,685	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
56	Blue Cross & Blue Shield of South Carolina 2 awardees, including Companion Data Services LLC Top agencies HHS (Department of Health and Human Services)	$42,266,942	0.2%	Rank history: #40 in FY2021, #46 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
57	Microtechnologies LLC 2 awardees, including Defined Technologies, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$40,859,600	0.2%	Rank history: #91 in FY2021, #45 in FY2022 and not on the FY2024–FY2025 lists; down 12 since FY2022.
58	Eagle Harbor, LLC Top agencies DOJ (Department of Justice)	$40,262,920	0.2%	Rank history: #88 in FY2021, #70 in FY2022, #37 in FY2024 and #38 in FY2025; up 12 since FY2022.
59	Tsymmetry Inc. Top agencies DOS (Department of State)	$39,733,684	0.2%	Rank history: #67 in FY2021, #83 in FY2022, #57 in FY2024 and not on the FY2025 list; up 24 since FY2022.
60	Ba-Zai JV, LLC Top agencies DOJ (Department of Justice) HHS (Department of Health and Human Services)	$39,476,458	0.2%	Rank history: #39 in FY2021, #51 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
61	Harvard Pilgrim Health Care Inc Top agencies HHS (Department of Health and Human Services)	$39,292,974	0.2%	Rank history: not on the FY2021 list, #65 in FY2022 and not on the FY2024–FY2025 lists; up 4 since FY2022.
62	Mythics, LLC 2 awardees, including Emergent, LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) Smithsonian (Smithsonian Institution)	$38,627,824	0.2%	Rank history: #58 in FY2021, #57 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
63	General Dynamics Information Technology, Inc. Top agencies HHS (Department of Health and Human Services) DOT (Department of Transportation)	$37,992,194	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 239 since FY2022.
64	Technology Solutions Provider Inc Top agencies USDA (Department of Agriculture) GSA (General Services Administration) HHS (Department of Health and Human Services)	$36,329,847	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
65	Axon Enterprise, Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) USDA (Department of Agriculture)	$34,591,314	0.2%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2024 and #80 in FY2025; up 174 since FY2022.
66	Valdez International Corporation Top agencies USAF (Department of the Air Force)	$33,360,687	0.2%	Rank history: #62 in FY2021, #77 in FY2022, #91 in FY2024 and not on the FY2025 list; up 11 since FY2022.
67	Solid State Scientific Corporation Top agencies USAF (Department of the Air Force)	$32,729,075	0.2%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2024 and #71 in FY2025; up 86 since FY2022.
68	Technica Corporation Top agencies USAF (Department of the Air Force)	$31,912,032	0.2%	Rank history: #63 in FY2021, #68 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
69	American Systems Corporation Top agencies USAF (Department of the Air Force) GSA (General Services Administration)	$31,587,722	0.2%	Rank history: #52 in FY2021, #81 in FY2022 and not on the FY2024–FY2025 lists; up 12 since FY2022.
70	Intelsat General Communications LLC 2 awardees, including Intelsat US LLC Top agencies DMA (Defense Media Activity) Army (Department of the Army) MDA (DOD Missile Defense Agency)	$31,171,054	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
71	The Mathworks, Inc. Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$30,012,583	0.2%	Rank history: #98 in FY2021, #88 in FY2022, #71 in FY2024 and #60 in FY2025; up 17 since FY2022.
72	Ignite Digital Federal Services, LLC Top agencies Navy (Department of the Navy) DHA (Defense Health Agency) Army (Department of the Army)	$29,894,913	0.2%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2024 and #54 in FY2025; up 124 since FY2022.
73	RTX Corporation 14 awardees, including Arinc Incorporated, Raytheon Company and Solipsys Corporation Top agencies USAF (Department of the Air Force) Commerce (Department of Commerce) Navy (Department of the Navy)	$28,178,063	0.2%	Rank history: #17 in FY2021, #39 in FY2022 and not on the FY2024–FY2025 lists; down 34 since FY2022.
74	IQ Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$27,853,304	0.2%	Rank history: #50 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 53 since FY2022.
75	Talton Communications Inc. Top agencies DHS (Department of Homeland Security)	$27,503,740	0.2%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2024 and not on the FY2025 list; up 27 since FY2022.
76	Ventera LLC Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) DOI (Department of the Interior)	$26,826,400	0.2%	Rank history: not on the FY2021–FY2022 lists, #66 in FY2024 and #56 in FY2025; up 253 since FY2022.
77	Cox Subscriptions, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) Commerce (Department of Commerce)	$26,288,725	0.2%	Rank history: not on the FY2021 list, #86 in FY2022, #81 in FY2024 and #61 in FY2025; up 9 since FY2022.
78	York Telecom Corporation Through Kinly US Corporation Top agencies SSA (Social Security Administration)	$26,217,860	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 41 since FY2022.
79	Caelum Research Corporation Top agencies Army (Department of the Army)	$25,839,986	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 69 since FY2022.
80	Monkton, Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$25,527,336	0.1%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2024 and #37 in FY2025; up 48 since FY2022.
81	Lhdtsv LLC Top agencies Commerce (Department of Commerce)	$25,348,316	0.1%	Rank history: not on the FY2021 list, #75 in FY2022, not on the FY2024 list and #81 in FY2025; down 6 since FY2022.
82	Alaska Northstar Resources LLC Top agencies USAF (Department of the Air Force)	$25,181,862	0.1%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2024 and not on the FY2025 list; up 35 since FY2022.
83	American Chemical Society 2 awardees Top agencies Commerce (Department of Commerce) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$24,878,331	0.1%	Rank history: #95 in FY2021, #84 in FY2022, #92 in FY2024 and not on the FY2025 list; up 1 since FY2022.
84	Manhattan Associates, Inc. Top agencies DHS (Department of Homeland Security) DISA (Defense Information Systems Agency) DECA (Defense Commissary Agency)	$24,555,101	0.1%	Rank history: not on the FY2021 list, #99 in FY2022, #97 in FY2024 and #77 in FY2025; up 15 since FY2022.
85	Secure Federal Operations LLC 3 awardees, including T-Mobile Secure Federal Operations LLC and Sprint Solutions LLC Top agencies DISA (Defense Information Systems Agency) DHS (Department of Homeland Security) Army (Department of the Army)	$24,353,345	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
86	Ritenet Corp. Top agencies DISA (Defense Information Systems Agency) DMA (Defense Media Activity) Army (Department of the Army)	$24,341,473	0.1%	Rank history: #92 in FY2021, not on the FY2022 list, #99 in FY2024 and #99 in FY2025; up 21 since FY2022.
87	Caci Nss, LLC Top agencies USAF (Department of the Air Force)	$24,255,268	0.1%	Rank history: not on the FY2021 list, #52 in FY2022 and not on the FY2024–FY2025 lists; down 35 since FY2022.
88	T-Mobile US Inc. 3 awardees, including T-Mobile Usa, Inc. Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) Navy (Department of the Navy)	$24,025,492	0.1%	Rank history: #41 in FY2021, #78 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
89	DLT Solutions LLC 2 awardees, including TECH Data Government Solutions, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) National Gallery of Art	$23,738,894	0.1%	Rank history: #34 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 51 since FY2022.
90	Arctic Slope Regional Corporation 4 awardees, including Asrc Federal Professional Services, LLC, Asrc Federal System Solutions LLC and Asrc Federal Data Solutions, LLC Top agencies Commerce (Department of Commerce) USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$23,648,182	0.1%	Rank history: #97 in FY2021, #96 in FY2022, #80 in FY2024 and #66 in FY2025; up 6 since FY2022.
91	Bristol Bay Native Corporation 2 awardees, including Gc&E Systems Group, LLC Top agencies Army (Department of the Army)	$23,556,641	0.1%	Rank history: not on the FY2021 list, #95 in FY2022 and not on the FY2024–FY2025 lists; up 4 since FY2022.
92	Trace Systems Holdings Inc. 2 awardees, including Trace Systems, Inc. Top agencies DODEA (Department of Defense Education Activity) USAF (Department of the Air Force) DISA (Defense Information Systems Agency)	$23,135,449	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 79 since FY2022.
93	Ebsco Industries Inc. 4 awardees, including Yankee Book Peddler Incorporated Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Commerce (Department of Commerce)	$22,914,134	0.1%	Rank history: #78 in FY2021, #76 in FY2022 and not on the FY2024–FY2025 lists; down 17 since FY2022.
94	Fedresults, Inc. Top agencies Army (Department of the Army) SSA (Social Security Administration) DOL (Department of Labor)	$22,487,064	0.1%	Rank history: #71 in FY2021, #64 in FY2022, #89 in FY2024 and not on the FY2025 list; down 30 since FY2022.
95	Skillsoft Corporation Through Skillsoft (Us) LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$22,419,300	0.1%	Rank history: not on the FY2021 list, #98 in FY2022 and not on the FY2024–FY2025 lists; up 3 since FY2022.
96	NCR Corporation Through NCR Government Systems LLC Top agencies DECA (Defense Commissary Agency) DISA (Defense Information Systems Agency)	$21,823,826	0.1%	Rank history: #90 in FY2021, #100 in FY2022 and not on the FY2024–FY2025 lists; up 4 since FY2022.
97	Enterprise Technology Solutions, Inc. Top agencies Army (Department of the Army) Treasury (Department of the Treasury) Navy (Department of the Navy)	$21,075,889	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #78 in FY2025; up 134 since FY2022.
98	Telos Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force) DOJ (Department of Justice)	$20,785,697	0.1%	Rank history: #24 in FY2021, #35 in FY2022 and not on the FY2024–FY2025 lists; down 63 since FY2022.
99	H.i.g. Capital Management Inc. 2 awardees, including Iron Bow Technologies, LLC Top agencies Army (Department of the Army) DHA (Defense Health Agency) DOS (Department of State)	$20,483,573	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 25 since FY2022.
100	Wolters Kluwer N.V. 9 awardees, including Uptodate, Inc., Ovid Technologies, Inc. and CCH Incorporated Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$20,344,861	0.1%	Rank history: #85 in FY2021, #87 in FY2022 and not on the FY2024–FY2025 lists; down 13 since FY2022.

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100 of 5,079 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 51

Code	Net obligations	Largest contractor
511 Publishing Industries (except Internet)	$5,981,701,810	Dell Federal Systems L.P.
517 Telecommunications	$5,946,527,075	At&T Inc.
518 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$3,033,913,052	Leidos Holdings, Inc.
519 Web Search Portals, Libraries, Archives, and Other Information Services	$580,759,353	Thomson Reuters (Tax & Accounting) Inc.
513 Publishing Industries	$479,402,245	Palantir Technologies Inc.
512 Motion Picture and Sound Recording Industries	$79,622,051	The Chenega Corporation
515 Broadcasting (except Internet)	$36,504,537	Verizon Communications Inc.
516 Broadcasting and Content Providers	$19,221,028	O'reilly Media, 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 $17.2 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 51 contractors in FY2023?

1. Dell Federal Systems L.P. ($2.34B), 2. At&T Inc. ($1.17B), 3. Carahsoft Technology Corp ($1.09B), 4. Verizon Communications Inc. ($634M), 5. HP Enterprise Services LLC ($597M), 6. Lumen Technologies, Inc. ($515M), 7. Palantir Technologies Inc. ($381M), 8. General Dynamics Corporation ($362M), 9. Leidos Holdings, Inc. ($307M), 10. CACI International Inc. ($238M).

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