Top 100 Contractors in NAICS 51821: Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services, FY2023

Name: Top 100 Contractors in NAICS 51821: Computing Infrastructure Providers, Data Processing, Web Hosting, 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 46% of FY2023 NAICS 51821 contract dollars

Contract obligations: $3,033,913,052 Net of deobligations, by contracts coded NAICS 51821 or a code under it
Contractors: 1,043 Parent companies with an obligation
Largest contractor: Leidos Holdings, Inc. $316 million, 9.7% 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	Leidos Holdings, Inc. 5 awardees, including Leidos, Inc. Top agencies DOT (Department of Transportation) HHS (Department of Health and Human Services) DOE (Department of Energy)	$316,301,966	9.7%	Rank history: #2 in FY2021, #1 in FY2022, #1 in FY2024 and #4 in FY2025; unchanged since FY2022.
2	General Dynamics Corporation 2 awardees, including General Dynamics Information Technology, Inc. Top agencies VA (Department of Veterans Affairs) DOT (Department of Transportation)	$276,595,306	8.5%	Rank history: #4 in FY2021, #6 in FY2022, #2 in FY2024 and #9 in FY2025; up 4 since FY2022.
3	HP Enterprise Services LLC 4 awardees, including Peraton Enterprise Solutions LLC, Peraton Technology Services Inc. and Peraton Inc. Top agencies DHS (Department of Homeland Security) HUD (Department of Housing and Urban Development) DHRA (Defense Human Resources Activity)	$258,535,246	8.0%	Rank history: #6 in FY2021, #2 in FY2022, #21 in FY2024 and not on the FY2025 list; down 1 since FY2022.
4	International Business Machines Corporation Top agencies VA (Department of Veterans Affairs) Treasury (Department of the Treasury) HHS (Department of Health and Human Services)	$153,283,268	4.7%	Rank history: #5 in FY2021, #5 in FY2022, #5 in FY2024 and #2 in FY2025; up 1 since FY2022.
5	Advantaged Solutions, LLC Top agencies DLA (Defense Logistics Agency)	$142,116,582	4.4%	Rank history: not on the FY2021 list, #3 in FY2022, #4 in FY2024 and #3 in FY2025; down 2 since FY2022.
6	Amazon.com, Inc. Through Amazon Web Services, Inc. Top agencies Navy (Department of the Navy) GSA (General Services Administration) DISA (Defense Information Systems Agency)	$81,955,805	2.5%	Rank history: #15 in FY2021, #31 in FY2022, #19 in FY2024 and not on the FY2025 list; up 25 since FY2022.
7	Intelligent Waves LLC Top agencies USAF (Department of the Air Force)	$79,617,113	2.5%	Rank history: #31 in FY2021, #15 in FY2022, #25 in FY2024 and #64 in FY2025; up 8 since FY2022.
8	Govcio, LLC Top agencies VA (Department of Veterans Affairs)	$70,091,977	2.2%	Rank history: #46 in FY2021, #14 in FY2022, #9 in FY2024 and #8 in FY2025; up 6 since FY2022.
9	Pfsweb Inc. Through Priority Fulfillment Services, Inc. Top agencies Treasury (Department of the Treasury)	$64,223,188	2.0%	Rank history: #14 in FY2021, #12 in FY2022, #16 in FY2024 and not on the FY2025 list; up 3 since FY2022.
10	Dataminr, Inc. Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$53,890,662	1.7%	Rank history: #7 in FY2021, #9 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
11	Westat, Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$46,826,943	1.4%	Rank history: #12 in FY2021, #11 in FY2022, #13 in FY2024 and #29 in FY2025; unchanged since FY2022.
12	Palantir Technologies Inc. Through Palantir USG Inc. Top agencies USAF (Department of the Air Force)	$44,536,647	1.4%	Rank history: #10 in FY2021, #4 in FY2022, not on the FY2024 list and #37 in FY2025; down 8 since FY2022.
13	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	1.3%	Rank history: #9 in FY2021, #8 in FY2022, #55 in FY2024 and not on the FY2025 list; down 5 since FY2022.
14	Eagle Harbor, LLC Top agencies DOJ (Department of Justice)	$40,262,920	1.2%	Rank history: #22 in FY2021, #16 in FY2022, #8 in FY2024 and #12 in FY2025; up 2 since FY2022.
15	Ba-Zai JV, LLC Top agencies DOJ (Department of Justice) HHS (Department of Health and Human Services)	$39,476,458	1.2%	Rank history: #8 in FY2021, #10 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
16	Harvard Pilgrim Health Care Inc Top agencies HHS (Department of Health and Human Services)	$39,292,974	1.2%	Rank history: #13 in FY2021, #13 in FY2022, #17 in FY2024 and #30 in FY2025; down 3 since FY2022.
17	General Dynamics Information Technology, Inc. Top agencies HHS (Department of Health and Human Services) DOT (Department of Transportation)	$37,992,194	1.2%	Rank history: not on the FY2021 list, #81 in FY2022 and not on the FY2024–FY2025 lists; up 64 since FY2022.
18	The Boeing Company Through Jeppesen Foreflight, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$35,561,985	1.1%	Rank history: #72 in FY2021, #18 in FY2022, #20 in FY2024 and #18 in FY2025; unchanged since FY2022.
19	Axon Enterprise, Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) DHS (Department of Homeland Security)	$34,255,482	1.1%	Rank history: not on the FY2021 list, #72 in FY2022, #30 in FY2024 and #27 in FY2025; up 53 since FY2022.
20	Solid State Scientific Corporation Top agencies USAF (Department of the Air Force)	$32,729,075	1.0%	Rank history: #27 in FY2021, #19 in FY2022, #24 in FY2024 and #23 in FY2025; down 1 since FY2022.
21	Ignite Digital Federal Services, LLC Top agencies Navy (Department of the Navy) DHA (Defense Health Agency) Army (Department of the Army)	$29,894,913	0.9%	Rank history: not on the FY2021 list, #56 in FY2022, #14 in FY2024 and #15 in FY2025; up 35 since FY2022.
22	Accenture Inc. Through Accenture Federal Services LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$28,817,301	0.9%	Rank history: not on the FY2021 list, #39 in FY2022 and not on the FY2024–FY2025 lists; up 17 since FY2022.
23	Ventera LLC Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) DOI (Department of the Interior)	$26,826,400	0.8%	Rank history: not on the FY2021 list, #93 in FY2022, #18 in FY2024 and #16 in FY2025; up 70 since FY2022.
24	Caelum Research Corporation Top agencies Army (Department of the Army)	$25,839,986	0.8%	Rank history: not on the FY2021 list, #43 in FY2022, #28 in FY2024 and #22 in FY2025; up 19 since FY2022.
25	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	0.8%	Rank history: #66 in FY2021, #37 in FY2022, #22 in FY2024 and #11 in FY2025; up 12 since FY2022.
26	Lhdtsv LLC Top agencies Commerce (Department of Commerce)	$25,348,316	0.8%	Rank history: #42 in FY2021, #17 in FY2022, #36 in FY2024 and #26 in FY2025; down 9 since FY2022.
27	Alaska Northstar Resources LLC Top agencies USAF (Department of the Air Force)	$25,181,862	0.8%	Rank history: #68 in FY2021, #33 in FY2022, #23 in FY2024 and #36 in FY2025; up 6 since FY2022.
28	Intelsat General Communications LLC Top agencies Army (Department of the Army) DMA (Defense Media Activity) MDA (DOD Missile Defense Agency)	$23,398,974	0.7%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2024 and #31 in FY2025; new.
29	Kbr, Inc. Through KBR Wyle Services, LLC Top agencies Commerce (Department of Commerce) Army (Department of the Army)	$22,718,417	0.7%	Rank history: #24 in FY2021, #24 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
30	Manhattan Associates, Inc. Top agencies DHS (Department of Homeland Security)	$22,422,632	0.7%	Rank history: #37 in FY2021, #29 in FY2022, #32 in FY2024 and #25 in FY2025; down 1 since FY2022.
31	IMG - Crown Energy Services Joint Venture, LLC Top agencies DOE (Department of Energy)	$19,315,782	0.6%	Rank history: #30 in FY2021, #53 in FY2022, #42 in FY2024 and #43 in FY2025; up 22 since FY2022.
32	Koniag Management Solutions LLC Top agencies ED (Department of Education) DECA (Defense Commissary Agency)	$19,019,040	0.6%	Rank history: #36 in FY2021, #26 in FY2022, #35 in FY2024 and #47 in FY2025; down 6 since FY2022.
33	Microsoft Corporation 3 awardees, including Github Inc. Top agencies DISA (Defense Information Systems Agency) USAF (Department of the Air Force) DODIG (Department of Defense Inspector General)	$18,912,206	0.6%	Rank history: not on the FY2021–FY2022 lists, #11 in FY2024 and #5 in FY2025; new.
34	Infotrend Incorporated Top agencies SEC (Securities and Exchange Commission)	$17,641,006	0.5%	Rank history: #44 in FY2021, #55 in FY2022, #75 in FY2024 and not on the FY2025 list; up 21 since FY2022.
35	Riva Solutions Inc Top agencies DOL (Department of Labor) ED (Department of Education)	$17,638,101	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
36	Samtek Inc. Top agencies HHS (Department of Health and Human Services)	$17,146,068	0.5%	Rank history: not on the FY2021 list, #52 in FY2022, #33 in FY2024 and #17 in FY2025; up 16 since FY2022.
37	Koniag, Inc. 2 awardees, including Kadiak LLC and Arlluk Technology Solutions LLC Top agencies DHA (Defense Health Agency) OSD (Office of the Secretary of Defense)	$15,918,523	0.5%	Rank history: not on the FY2021 list, #84 in FY2022, #67 in FY2024 and #46 in FY2025; up 47 since FY2022.
38	Norsk Romsenter Through Direktoratet for Romvirksomhet Top agencies Commerce (Department of Commerce)	$15,759,707	0.5%	Rank history: #53 in FY2021, #32 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
39	Iqvia Inc. Through Iqvia Government Solutions Inc. Top agencies HHS (Department of Health and Human Services)	$15,655,816	0.5%	Rank history: #40 in FY2021, #36 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
40	Agile Decision Sciences, LLC Top agencies HHS (Department of Health and Human Services) DOI (Department of the Interior) DHS (Department of Homeland Security)	$15,486,398	0.5%	Rank history: #69 in FY2021, #68 in FY2022, #66 in FY2024 and not on the FY2025 list; up 28 since FY2022.
41	Oracle Corporation 2 awardees, including Oracle America, Inc. Top agencies DISA (Defense Information Systems Agency) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$14,692,660	0.5%	Rank history: #47 in FY2021, #48 in FY2022, #26 in FY2024 and not on the FY2025 list; up 7 since FY2022.
42	Nova-Dine LLC Through DDC It Services LLC Top agencies DCSA (Defense Counterintelligence and Security Agency)	$13,919,789	0.4%	Rank history: #91 in FY2021, #23 in FY2022 and not on the FY2024–FY2025 lists; down 19 since FY2022.
43	Integrated Data Services, LLC Top agencies USAF (Department of the Air Force)	$13,720,600	0.4%	Rank history: #54 in FY2021, #40 in FY2022, #40 in FY2024 and #40 in FY2025; down 3 since FY2022.
44	Change Healthcare Technologies LLC 3 awardees, including Change Healthcare Holdings, Inc. and Change Healthcare Operations, LLC Top agencies VA (Department of Veterans Affairs)	$13,530,698	0.4%	Rank history: #20 in FY2021, #27 in FY2022, #46 in FY2024 and not on the FY2025 list; down 17 since FY2022.
45	Research Triangle Institute Top agencies HHS (Department of Health and Human Services)	$12,588,854	0.4%	Rank history: #45 in FY2021, #45 in FY2022, #41 in FY2024 and #45 in FY2025; unchanged since FY2022.
46	BAE Systems PLC Through BAE Systems Technology Solutions & Services Inc. Top agencies USAF (Department of the Air Force)	$12,499,988	0.4%	Rank history: #43 in FY2021, #47 in FY2022, #51 in FY2024 and not on the FY2025 list; up 1 since FY2022.
47	Medidata Solutions Inc. Top agencies HHS (Department of Health and Human Services)	$12,257,066	0.4%	Rank history: #55 in FY2021, #57 in FY2022 and not on the FY2024–FY2025 lists; up 10 since FY2022.
48	Fedresults, Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior) Navy (Department of the Navy)	$11,831,832	0.4%	Rank history: #23 in FY2021, #38 in FY2022, #60 in FY2024 and #58 in FY2025; down 10 since FY2022.
49	Acumen LLC Top agencies HHS (Department of Health and Human Services)	$11,139,691	0.3%	Rank history: #38 in FY2021, #42 in FY2022, #48 in FY2024 and #79 in FY2025; down 7 since FY2022.
50	Yardi Systems, LLC Top agencies HUD (Department of Housing and Urban Development)	$10,977,472	0.3%	Rank history: #97 in FY2021, #71 in FY2022, #50 in FY2024 and #49 in FY2025; up 21 since FY2022.
51	Itc-De, LLC Top agencies HHS (Department of Health and Human Services) Commerce (Department of Commerce) USDA (Department of Agriculture)	$10,617,372	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 60 since FY2022.
52	Koninklijke Philips N.V. Through Philips Electronics Nederland B.V. Top agencies OSD (Office of the Secretary of Defense)	$9,999,801	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
53	Relx Inc 3 awardees, including Lexisnexis Special Services Inc. Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security) Treasury (Department of the Treasury)	$9,642,845	0.3%	Rank history: not on the FY2021 list, #70 in FY2022, #27 in FY2024 and not on the FY2025 list; up 17 since FY2022.
54	Doma Technologies LLC Top agencies VA (Department of Veterans Affairs)	$9,351,924	0.3%	Rank history: #74 in FY2021, #35 in FY2022 and not on the FY2024–FY2025 lists; down 19 since FY2022.
55	Redhorse Corporation Top agencies USAF (Department of the Air Force)	$9,191,028	0.3%	Rank history: not on the FY2021 list, #60 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
56	Premier Healthcare Solutions Inc. Top agencies HHS (Department of Health and Human Services)	$9,173,779	0.3%	Rank history: not on the FY2021 list, #62 in FY2022 and not on the FY2024–FY2025 lists; up 6 since FY2022.
57	Thomson Reuters (Tax & Accounting) Inc. 3 awardees, including West Publishing Corporation and Thomson Reuters (Markets) LLC Top agencies DOJ (Department of Justice) DOD (Department of Defense) Treasury (Department of the Treasury)	$9,133,408	0.3%	Rank history: #25 in FY2021, #22 in FY2022 and not on the FY2024–FY2025 lists; down 35 since FY2022.
58	Open SAN Consulting LLC Top agencies OSD (Office of the Secretary of Defense)	$8,644,705	0.3%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2024 and #97 in FY2025; new.
59	Qualx, LLC Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) DOS (Department of State)	$8,159,788	0.3%	Rank history: #59 in FY2021, #50 in FY2022, #98 in FY2024 and not on the FY2025 list; down 9 since FY2022.
60	UnitedHealth Group Incorporated Through The Lewin Group, Inc. Top agencies HHS (Department of Health and Human Services)	$8,132,803	0.3%	Rank history: #26 in FY2021, #44 in FY2022, #69 in FY2024 and not on the FY2025 list; down 16 since FY2022.
61	Space Sciences and Engineering LLC Top agencies Commerce (Department of Commerce)	$8,060,600	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 207 since FY2022.
62	Alaska Native Government Services LLC Through Copper River Technologies, LLC Top agencies WHS (DOD Washington Headquarters Service)	$8,012,341	0.2%	Rank history: #98 in FY2021, #54 in FY2022 and not on the FY2024–FY2025 lists; down 8 since FY2022.
63	Tanaq Management Services LLC Top agencies HHS (Department of Health and Human Services)	$7,965,060	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
64	NEC Corporation Through NEC National Security Systems, Inc. Top agencies DHS (Department of Homeland Security)	$7,950,000	0.2%	Rank history: #61 in FY2021, #64 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
65	Vertosoft LLC Top agencies DOJ (Department of Justice) USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$7,309,015	0.2%	Rank history: not on the FY2021–FY2022 lists, #44 in FY2024 and #52 in FY2025; up 47 since FY2022.
66	Chenega It Enterprise Services, LLC Top agencies EPA (Environmental Protection Agency)	$6,666,635	0.2%	Rank history: #34 in FY2021, #67 in FY2022, #43 in FY2024 and #48 in FY2025; up 1 since FY2022.
67	Resultant LLC Top agencies Treasury (Department of the Treasury)	$6,601,562	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 50 since FY2022.
68	Deloitte Consulting LLP Top agencies VA (Department of Veterans Affairs)	$6,180,427	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 65 since FY2022.
69	The Chenega Corporation 4 awardees, including Chenega Healthcare Services LLC and Chenega Analytic Business Solutions, LLC Top agencies SEC (Securities and Exchange Commission) Treasury (Department of the Treasury) NRC (Nuclear Regulatory Commission)	$6,113,880	0.2%	Rank history: #94 in FY2021, #63 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
70	Intelligenesis LLC Top agencies DCSA (Defense Counterintelligence and Security Agency)	$5,976,313	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
71	The IQ Business Group (PTY) Ltd Through The IQ Business Group, Inc. Top agencies DOI (Department of the Interior)	$5,964,768	0.2%	Rank history: #62 in FY2021, #61 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
72	Edgewater Federal Solutions, Inc. Top agencies DOE (Department of Energy)	$5,897,079	0.2%	Rank history: #50 in FY2021, #49 in FY2022, #65 in FY2024 and #73 in FY2025; down 23 since FY2022.
73	Brillient Corporation Top agencies Treasury (Department of the Treasury)	$5,801,562	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 43 since FY2022.
74	Akamai Technologies Inc. Top agencies DHS (Department of Homeland Security) EOP (Executive Office of the President)	$5,760,217	0.2%	Rank history: #77 in FY2021, #76 in FY2022, #78 in FY2024 and not on the FY2025 list; up 2 since FY2022.
75	The Tatitlek Corporation 2 awardees, including Tatitlek Federal Services LLC and Geonorth Information Systems LLC Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$5,560,233	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 59 since FY2022.
76	State of California Controllers Office 5 awardees, including California Department of Public Health, University of California, LOS Angeles and University of California San Diego Top agencies SSA (Social Security Administration) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$5,393,437	0.2%	Rank history: not on the FY2021 list, #83 in FY2022 and not on the FY2024–FY2025 lists; up 7 since FY2022.
77	CVS Health Corporation Through CVS Healthspire Payor & Life Sciences LLC Top agencies HHS (Department of Health and Human Services)	$5,301,922	0.2%	Rank history: #83 in FY2021, #73 in FY2022, not on the FY2024 list and #71 in FY2025; down 4 since FY2022.
78	Huna Totem Corp Through Distributed Computing System Solutions Provider, Inc. Top agencies SEC (Securities and Exchange Commission)	$5,184,367	0.2%	Rank history: #90 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 417 since FY2022.
79	Anthem Inc. Through Wellpoint Federal Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$5,184,318	0.2%	Rank history: #32 in FY2021, #66 in FY2022 and not on the FY2024–FY2025 lists; down 13 since FY2022.
80	Dnanexus, Inc. Top agencies HHS (Department of Health and Human Services)	$5,025,468	0.2%	Rank history: not on the FY2021 list, #85 in FY2022, #84 in FY2024 and not on the FY2025 list; up 5 since FY2022.
81	Ripcord Inc. Top agencies Treasury (Department of the Treasury)	$4,950,000	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 41 since FY2022.
82	Koniag Professional Services, LLC Top agencies HHS (Department of Health and Human Services)	$4,833,366	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
83	Packet Forensics LLC Top agencies USAF (Department of the Air Force)	$4,696,800	0.1%	Rank history: not on the FY2021 list, #82 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
84	International Health Terminology Standards Development Organisation Top agencies HHS (Department of Health and Human Services)	$4,675,596	0.1%	Rank history: #88 in FY2021, #77 in FY2022, #88 in FY2024 and #93 in FY2025; down 7 since FY2022.
85	Tekpro Support Services, LLC Top agencies HHS (Department of Health and Human Services) DOI (Department of the Interior)	$4,596,604	0.1%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2024 and not on the FY2025 list; new.
86	Allium US Holding LLC Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$4,443,893	0.1%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2024 and #69 in FY2025; new.
87	Battelle Memorial Institute Top agencies USAF (Department of the Air Force)	$4,245,868	0.1%	Rank history: #92 in FY2021, #75 in FY2022, #95 in FY2024 and not on the FY2025 list; down 12 since FY2022.
88	Bureau Van Dijk Electronic Publishing Inc. Top agencies Treasury (Department of the Treasury)	$4,213,000	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
89	Quality Information Partners, Inc. Top agencies ED (Department of Education)	$4,206,315	0.1%	Rank history: not on the FY2021 list, #94 in FY2022, #91 in FY2024 and not on the FY2025 list; up 5 since FY2022.
90	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies VA (Department of Veterans Affairs)	$3,946,672	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 19 since FY2022.
91	Deloitte LLP 3 awardees, including Deloitte Consulting LLP and Deloitte Financial Advisory Services LLP Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DOL (Department of Labor)	$3,887,567	0.1%	Rank history: #35 in FY2021, #74 in FY2022 and not on the FY2024–FY2025 lists; down 17 since FY2022.
92	Google Public Sector LLC Top agencies DISA (Defense Information Systems Agency)	$3,862,200	0.1%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2024 and #56 in FY2025; new.
93	Healthverity Inc. Top agencies HHS (Department of Health and Human Services)	$3,831,075	0.1%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2024 and #78 in FY2025; up 10 since FY2022.
94	Teksynap Corporation Top agencies Army (Department of the Army)	$3,818,179	0.1%	Rank history: not on the FY2021 list, #98 in FY2022 and not on the FY2024–FY2025 lists; up 4 since FY2022.
95	Aermor LLC Top agencies Navy (Department of the Navy)	$3,796,584	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #94 in FY2025; new.
96	It-Cnp Inc. Top agencies HHS (Department of Health and Human Services) CFA (United States Commission of Fine Arts)	$3,683,156	0.1%	Rank history: not on the FY2021 list, #88 in FY2022 and not on the FY2024–FY2025 lists; down 8 since FY2022.
97	Northrop Grumman Corporation Through Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) HUD (Department of Housing and Urban Development)	$3,680,613	0.1%	Rank history: #17 in FY2021, #20 in FY2022 and not on the FY2024–FY2025 lists; down 77 since FY2022.
98	Vion Corporation Top agencies Navy (Department of the Navy)	$3,641,281	0.1%	Rank history: #56 in FY2021, #89 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
99	Carahsoft Technology Corp Top agencies DOJ (Department of Justice) USAF (Department of the Air Force) NRC (Nuclear Regulatory Commission)	$3,557,724	0.1%	Rank history: #63 in FY2021, #69 in FY2022 and not on the FY2024–FY2025 lists; down 30 since FY2022.
100	Ntvi Solutions, LLC Top agencies Treasury (Department of the Treasury)	$3,497,856	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 154 since FY2022.

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100 of 1,043 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 51821

Code	Net obligations	Largest contractor
518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$3,033,913,052	Leidos Holdings, 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 $3.25 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 51821 contractors in FY2023?

1. Leidos Holdings, Inc. ($316M), 2. General Dynamics Corporation ($277M), 3. HP Enterprise Services LLC ($259M), 4. International Business Machines Corporation ($153M), 5. Advantaged Solutions, LLC ($142M), 6. Amazon.com, Inc. ($82M), 7. Intelligent Waves LLC ($79.6M), 8. Govcio, LLC ($70.1M), 9. Pfsweb Inc. ($64.2M), 10. Dataminr, Inc. ($53.9M).

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