Top 100 Contractors in NAICS 54199: All Other Professional, Scientific, and Technical Services, FY2022

Name: Top 100 Contractors in NAICS 54199: All Other Professional, Scientific, and Technical Services, FY2022
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2021 – Sep 30, 2022 Code page on GovTribe

The top 10 won 38% of FY2022 NAICS 54199 contract dollars

Contract obligations: $11,775,078,957 Net of deobligations, by contracts coded NAICS 54199 or a code under it
Contractors: 2,829 Parent companies with an obligation
Largest contractor: Battelle Memorial Institute $1.49 billion, 12.0% 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	Battelle Memorial Institute 2 awardees, including Battelle Energy Alliance, LLC Top agencies DOE (Department of Energy) USSOCOM (United States Special Operations Command) USAF (Department of the Air Force)	$1,488,444,844	12.0%	Rank history: #1 in FY2021, not on the FY2023 list, #1 in FY2024 and #1 in FY2025; unchanged since FY2021.
2	The Mitre Corporation 3 awardees Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$812,075,149	6.6%	Rank history: #3 in FY2021, #2 in FY2023, #3 in FY2024 and #2 in FY2025; up 1 since FY2021.
3	Sierra Nevada Company, LLC 2 awardees Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) WHS (DOD Washington Headquarters Service)	$593,728,738	4.8%	Rank history: #2 in FY2021, #3 in FY2023, #4 in FY2024 and #4 in FY2025; down 1 since FY2021.
4	Oak Ridge Associated Universities, Incorporated Top agencies DOE (Department of Energy) HHS (Department of Health and Human Services) EPA (Environmental Protection Agency)	$368,299,767	3.0%	Rank history: #5 in FY2021, #5 in FY2023, #6 in FY2024 and #9 in FY2025; up 1 since FY2021.
5	DAI Global LLC Top agencies USAID (US Agency for International Development)	$320,963,228	2.6%	Rank history: #7 in FY2021, #6 in FY2023, #7 in FY2024 and #13 in FY2025; up 2 since FY2021.
6	ABT Global LLC 2 awardees Top agencies USAID (US Agency for International Development) HHS (Department of Health and Human Services)	$272,152,808	2.2%	Rank history: #6 in FY2021, #12 in FY2023, #11 in FY2024 and #10 in FY2025; unchanged since FY2021.
7	Chemonics International, Inc. Top agencies USAID (US Agency for International Development)	$238,581,979	1.9%	Rank history: #9 in FY2021, #9 in FY2023, #14 in FY2024 and #29 in FY2025; up 2 since FY2021.
8	Institute for Defense Analyses Top agencies Navy (Department of the Navy) DSCA (Defense Security Cooperation Agency) OSD (Office of the Secretary of Defense)	$229,733,206	1.9%	Rank history: #12 in FY2021, #8 in FY2023, #9 in FY2024 and #8 in FY2025; up 4 since FY2021.
9	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies OSD (Office of the Secretary of Defense) DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services)	$208,790,580	1.7%	Rank history: #11 in FY2021, #7 in FY2023, #8 in FY2024 and #3 in FY2025; up 2 since FY2021.
10	Northrop Grumman Corporation 7 awardees, including Northrop Grumman Systems Corporation, Northrop Grumman Technical Services, Inc. and Remotec, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) CFTC (Commodity Futures Trading Commission)	$165,657,718	1.3%	Rank history: #17 in FY2021, #13 in FY2023, #13 in FY2024 and #7 in FY2025; up 7 since FY2021.
11	Battelle Energy Alliance, LLC Top agencies DOE (Department of Energy)	$155,660,948	1.3%	Rank history: not on the FY2021 list, #1 in FY2023, #2 in FY2024 and not on the FY2025 list; new.
12	The Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top agencies OSD (Office of the Secretary of Defense) USSOCOM (United States Special Operations Command) DISA (Defense Information Systems Agency)	$140,154,050	1.1%	Rank history: #8 in FY2021, #10 in FY2023, #87 in FY2024 and not on the FY2025 list; down 4 since FY2021.
13	RTX Corporation 16 awardees, including Raytheon Company, Nightwing Technologies, LLC and Everfox LLC Top agencies Navy (Department of the Navy) USSOCOM (United States Special Operations Command) DTRA (Defense Threat Reduction Agency)	$135,050,921	1.1%	Rank history: #13 in FY2021, #18 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2021.
14	Aevex Aerospace, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$131,193,647	1.1%	Rank history: not on the FY2021 list, #4 in FY2023, #20 in FY2024 and not on the FY2025 list; up 260 since FY2021.
15	Research Triangle Institute 2 awardees Top agencies HHS (Department of Health and Human Services) USAID (US Agency for International Development) NSF (National Science Foundation)	$119,498,264	1.0%	Rank history: #16 in FY2021, #14 in FY2023, #15 in FY2024 and #21 in FY2025; up 1 since FY2021.
16	The Rand Corporation Top agencies OSD (Office of the Secretary of Defense) Army (Department of the Army) MCC (Millennium Challenge Corporation)	$119,403,446	1.0%	Rank history: #18 in FY2021, #16 in FY2023, #21 in FY2024 and #24 in FY2025; up 2 since FY2021.
17	E3Health Solutions, LLC Top agencies HHS (Department of Health and Human Services)	$118,864,696	1.0%	Rank history: not on the FY2021 list, #31 in FY2023 and not on the FY2024–FY2025 lists; new.
18	Deloitte LLP 4 awardees, including Deloitte Consulting LLP, Deloitte & Touche LLP and Deloitte Financial Advisory Services LLP Top agencies HHS (Department of Health and Human Services) USAID (US Agency for International Development) DOS (Department of State)	$114,712,463	0.9%	Rank history: #15 in FY2021, #20 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2021.
19	Tetra Tech, Inc. 5 awardees, including Ard, Inc., Management Systems International, Inc. and The Kaizen Company, LLC Top agencies USAID (US Agency for International Development) DSCA (Defense Security Cooperation Agency)	$97,882,851	0.8%	Rank history: #14 in FY2021, #11 in FY2023, #12 in FY2024 and #59 in FY2025; down 5 since FY2021.
20	The CNA Corporation Top agencies Navy (Department of the Navy) WHS (DOD Washington Headquarters Service) OSD (Office of the Secretary of Defense)	$96,254,107	0.8%	Rank history: #19 in FY2021, #21 in FY2023, #24 in FY2024 and #22 in FY2025; down 1 since FY2021.
21	UnitedHealth Group Incorporated 4 awardees, including Optumhealth Care Solutions, LLC, Optumserve Health Services, Inc. and The Lewin Group, Inc. Top agencies DHA (Defense Health Agency) DHS (Department of Homeland Security) VA (Department of Veterans Affairs)	$90,126,453	0.7%	Rank history: #21 in FY2021, not on the FY2023 list, #34 in FY2024 and #40 in FY2025; unchanged since FY2021.
22	Palladium International LLC Top agencies USAID (US Agency for International Development)	$79,214,120	0.6%	Rank history: #22 in FY2021, #23 in FY2023, #45 in FY2024 and #48 in FY2025; unchanged since FY2021.
23	Management Sciences for Health, Inc. Top agencies USAID (US Agency for International Development)	$72,746,422	0.6%	Rank history: #27 in FY2021 and not on the FY2023–FY2025 lists; up 4 since FY2021.
24	Quality Health Strategies Inc. Through Qlarant Integrity Solutions LLC Top agencies HHS (Department of Health and Human Services)	$72,381,060	0.6%	Rank history: #25 in FY2021, #24 in FY2023, #41 in FY2024 and not on the FY2025 list; up 1 since FY2021.
25	Medical Science & Computing, LLC Top agencies HHS (Department of Health and Human Services)	$71,641,809	0.6%	Rank history: #20 in FY2021, #27 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2021.
26	Leidos Holdings, Inc. 10 awardees, including Leidos, Inc. and Dynetics Technical Solutions Inc. Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$68,212,421	0.6%	Rank history: #24 in FY2021, #22 in FY2023, #29 in FY2024 and #37 in FY2025; down 2 since FY2021.
27	Government of the United States 2 awardees, including Right To Care and Nuclear Regulatory Commission Top agencies USAID (US Agency for International Development) Commerce (Department of Commerce)	$67,010,708	0.5%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
28	Guidehouse Inc. 2 awardees Top agencies SBA (Small Business Administration) USAID (US Agency for International Development) HHS (Department of Health and Human Services)	$66,207,837	0.5%	Rank history: #10 in FY2021 and not on the FY2023–FY2025 lists; down 18 since FY2021.
29	Westat, Inc. Top agencies HHS (Department of Health and Human Services)	$65,677,973	0.5%	Rank history: #32 in FY2021, #40 in FY2023, #67 in FY2024 and not on the FY2025 list; up 3 since FY2021.
30	Amentum Services, Inc. 3 awardees, including URS Federal Services International, Inc. Top agencies DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy)	$59,721,502	0.5%	Rank history: #36 in FY2021 and not on the FY2023–FY2025 lists; up 6 since FY2021.
31	HP Enterprise Services LLC 4 awardees, including Safeguard Services LLC and Peraton Inc. Top agencies HHS (Department of Health and Human Services) DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy)	$58,231,780	0.5%	Rank history: not on the FY2021 list, #30 in FY2023, #82 in FY2024 and not on the FY2025 list; up 235 since FY2021.
32	PAE Government Services Inc. 4 awardees, including PAE National Security Solutions LLC, Centra Technology, Inc. and Delta Bridge, Inc. Top agencies DTRA (Defense Threat Reduction Agency) DHS (Department of Homeland Security) Navy (Department of the Navy)	$57,702,026	0.5%	Rank history: #28 in FY2021 and not on the FY2023–FY2025 lists; down 4 since FY2021.
33	Education Development Center, Inc. Top agencies USAID (US Agency for International Development) HHS (Department of Health and Human Services)	$56,795,551	0.5%	Rank history: #41 in FY2021, #59 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2021.
34	Actionable Solutions Group, LLC Top agencies USSOCOM (United States Special Operations Command)	$55,717,326	0.5%	Rank history: #55 in FY2021, #43 in FY2023, #85 in FY2024 and #98 in FY2025; up 21 since FY2021.
35	CACI International Inc. 5 awardees, including Caci, Inc. - Federal and Caci Nss, LLC Top agencies USSOCOM (United States Special Operations Command) OSD (Office of the Secretary of Defense) DTRA (Defense Threat Reduction Agency)	$54,435,374	0.4%	Rank history: #26 in FY2021, #50 in FY2023, #32 in FY2024 and #17 in FY2025; down 9 since FY2021.
36	Noridian Mutual Insurance Company Through Noridian Healthcare Solutions, LLC Top agencies HHS (Department of Health and Human Services)	$53,547,377	0.4%	Rank history: #23 in FY2021, #32 in FY2023 and not on the FY2024–FY2025 lists; down 13 since FY2021.
37	Creative Associates International, Inc. Top agencies USAID (US Agency for International Development)	$51,245,383	0.4%	Rank history: #90 in FY2021, #28 in FY2023, #37 in FY2024 and not on the FY2025 list; up 53 since FY2021.
38	BAE Systems PLC Through BAE Systems Technology Solutions & Services Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$48,178,437	0.4%	Rank history: #44 in FY2021, #39 in FY2023, #39 in FY2024 and not on the FY2025 list; up 6 since FY2021.
39	Chickasaw Health Consulting, LLC Top agencies HHS (Department of Health and Human Services) PBGC (Pension Benefit Guaranty Corporation)	$47,290,445	0.4%	Rank history: #45 in FY2021 and not on the FY2023–FY2025 lists; up 6 since FY2021.
40	National Collegiate Inventors & Innovators Alliance, Inc. Top agencies HHS (Department of Health and Human Services)	$46,240,415	0.4%	Rank history: #76 in FY2021, #41 in FY2023 and not on the FY2024–FY2025 lists; up 36 since FY2021.
41	Science Applications International Corporation 4 awardees, including Forfeiture Support Associates LLC Top agencies PBGC (Pension Benefit Guaranty Corporation) DTRA (Defense Threat Reduction Agency) DOJ (Department of Justice)	$44,969,353	0.4%	Rank history: #30 in FY2021, #38 in FY2023, #47 in FY2024 and not on the FY2025 list; down 11 since FY2021.
42	Deloitte Consulting Limited 2 awardees Top agencies USAID (US Agency for International Development) USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$44,435,343	0.4%	Rank history: not on the FY2021 list, not on the FY2023 list, #51 in FY2024 and not on the FY2025 list; up 253 since FY2021.
43	Novetta Solutions, LLC Through Accenture Federal Services LLC Top agencies USAF (Department of the Air Force) DOS (Department of State) OSD (Office of the Secretary of Defense)	$41,834,620	0.3%	Rank history: #49 in FY2021, #29 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2021.
44	Bluestaq LLC Top agencies USAF (Department of the Air Force)	$41,574,154	0.3%	Rank history: not on the FY2021 list, #42 in FY2023, #17 in FY2024 and #18 in FY2025; up 81 since FY2021.
45	ICF International, Inc. 2 awardees, including ICF Macro Inc. and ICF Incorporated, L.L.C. Top agencies USAID (US Agency for International Development) EPA (Environmental Protection Agency) HHS (Department of Health and Human Services)	$38,365,920	0.3%	Rank history: #37 in FY2021, #33 in FY2023 and not on the FY2024–FY2025 lists; down 8 since FY2021.
46	Social Solutions International, Inc. Top agencies USAID (US Agency for International Development)	$37,730,290	0.3%	Rank history: #52 in FY2021 and not on the FY2023–FY2025 lists; up 6 since FY2021.
47	Acdi / Voca Top agencies USAID (US Agency for International Development)	$37,487,151	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 177 since FY2021.
48	Jhpiego Corp Top agencies USAID (US Agency for International Development)	$37,389,623	0.3%	Rank history: not on the FY2021 list, #60 in FY2023, #100 in FY2024 and #55 in FY2025; up 85 since FY2021.
49	Hendall Inc. Top agencies HHS (Department of Health and Human Services)	$36,214,982	0.3%	Rank history: #51 in FY2021, #44 in FY2023, #48 in FY2024 and #73 in FY2025; up 2 since FY2021.
50	Aecom International Development Inc 2 awardees, including DT Global Inc. Top agencies USAID (US Agency for International Development) MCC (Millennium Challenge Corporation)	$36,013,707	0.3%	Rank history: #56 in FY2021 and not on the FY2023–FY2025 lists; up 6 since FY2021.
51	WWC Global LLC Top agencies USSOCOM (United States Special Operations Command) Army (Department of the Army) DTRA (Defense Threat Reduction Agency)	$35,903,509	0.3%	Rank history: #39 in FY2021, #52 in FY2023 and not on the FY2024–FY2025 lists; down 12 since FY2021.
52	General Dynamics Corporation 7 awardees, including General Dynamics Information Technology, Inc., General Dynamics Mission Systems, Inc. and General Dynamics European Land Systems-Bridge Systems GMBH Top agencies DHA (Defense Health Agency) Army (Department of the Army) DTRA (Defense Threat Reduction Agency)	$35,737,084	0.3%	Rank history: #60 in FY2021, #54 in FY2023, #26 in FY2024 and #16 in FY2025; up 8 since FY2021.
53	AMN Healthcare Services Incorporated Through AMN Healthcare Inc. Top agencies DHS (Department of Homeland Security)	$35,206,797	0.3%	Rank history: #43 in FY2021 and not on the FY2023–FY2025 lists; down 10 since FY2021.
54	American Type Culture Collection Top agencies HHS (Department of Health and Human Services)	$34,272,121	0.3%	Rank history: #87 in FY2021, #65 in FY2023, #59 in FY2024 and not on the FY2025 list; up 33 since FY2021.
55	Blue Cross & Blue Shield of South Carolina 2 awardees, including Karna LLC and Palmetto Gba, LLC Top agencies HHS (Department of Health and Human Services)	$34,032,938	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
56	Medical Access Uganda Limited Top agencies USAID (US Agency for International Development)	$32,758,173	0.3%	Rank history: not on the FY2021 list, not on the FY2023 list, #38 in FY2024 and #86 in FY2025; new.
57	Strategic Analysis, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$31,861,702	0.3%	Rank history: #74 in FY2021, #47 in FY2023, #33 in FY2024 and #20 in FY2025; up 17 since FY2021.
58	Threat TEC - Yorktown JV, LLC Top agencies Army (Department of the Army)	$31,743,031	0.3%	Rank history: #48 in FY2021, #57 in FY2023, #50 in FY2024 and #96 in FY2025; down 10 since FY2021.
59	Nana Regional Corporation Inc 5 awardees, including Tuvli LLC, Rivertech LLC and Sava Workforce Solutions LLC Top agencies DOS (Department of State) DOT (Department of Transportation) DOJ (Department of Justice)	$31,612,042	0.3%	Rank history: #34 in FY2021 and not on the FY2023–FY2025 lists; down 25 since FY2021.
60	Emsi Holding Company Through Coventbridge (USA) LLC Top agencies HHS (Department of Health and Human Services)	$31,139,864	0.3%	Rank history: #53 in FY2021, #62 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2021.
61	Nathan Associates LLC Top agencies USAID (US Agency for International Development) MCC (Millennium Challenge Corporation) DHS (Department of Homeland Security)	$30,572,227	0.2%	Rank history: #40 in FY2021, #67 in FY2023 and not on the FY2024–FY2025 lists; down 21 since FY2021.
62	Connected Alliances LLC Top agencies USAF (Department of the Air Force)	$29,724,219	0.2%	Rank history: not on the FY2021 list, #77 in FY2023, #22 in FY2024 and #41 in FY2025; up 381 since FY2021.
63	Poplicus Incorporated Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) Army (Department of the Army)	$29,229,301	0.2%	Rank history: #67 in FY2021, #36 in FY2023, #23 in FY2024 and #39 in FY2025; up 4 since FY2021.
64	On Assignment, Inc. 4 awardees, including ECS Federal, LLC Top agencies DARPA (Defense Advanced Research Projects Agency) Commerce (Department of Commerce) Navy (Department of the Navy)	$28,679,406	0.2%	Rank history: #89 in FY2021, #37 in FY2023 and not on the FY2024–FY2025 lists; up 25 since FY2021.
65	Systems Planning and Analysis, Inc. Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$28,540,356	0.2%	Rank history: #57 in FY2021, #48 in FY2023, #66 in FY2024 and #38 in FY2025; down 8 since FY2021.
66	Goldbelt, Incorporated 5 awardees, including Goldbelt C6, LLC, Goldbelt Professional Services, LLC and Nisga'a Tek, LLC Top agencies HHS (Department of Health and Human Services) DOS (Department of State) Army (Department of the Army)	$28,234,551	0.2%	Rank history: not on the FY2021 list, #45 in FY2023 and not on the FY2024–FY2025 lists; up 63 since FY2021.
67	Calibre Systems Inc. Top agencies Army (Department of the Army)	$28,002,088	0.2%	Rank history: #42 in FY2021, #56 in FY2023, #65 in FY2024 and #67 in FY2025; down 25 since FY2021.
68	Parsons Corporation 5 awardees, including Parsons Government Services International Inc., Ptsi Managed Services Inc. and Ogsystems, LLC Top agencies DTRA (Defense Threat Reduction Agency) Army (Department of the Army) USAF (Department of the Air Force)	$27,624,843	0.2%	Rank history: #91 in FY2021, #19 in FY2023, #19 in FY2024 and #11 in FY2025; up 23 since FY2021.
69	SDV Office Systems LLC Top agencies VA (Department of Veterans Affairs)	$27,435,478	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
70	Seneca Family of Agencies Top agencies HHS (Department of Health and Human Services)	$27,115,332	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
71	Riverside Research Institute 2 awardees Top agencies USAF (Department of the Air Force)	$26,987,914	0.2%	Rank history: #63 in FY2021, #71 in FY2023 and not on the FY2024–FY2025 lists; down 8 since FY2021.
72	Eagle Integrated Services, LLC Top agencies USAF (Department of the Air Force)	$26,792,460	0.2%	Rank history: not on the FY2021 list, #75 in FY2023, #73 in FY2024 and #66 in FY2025; up 44 since FY2021.
73	JSI Research & Training Institute Inc. Top agencies USAID (US Agency for International Development)	$24,532,694	0.2%	Rank history: #50 in FY2021 and not on the FY2023–FY2025 lists; down 23 since FY2021.
74	Arctic Slope Mission Services LLC Top agencies EPA (Environmental Protection Agency)	$23,298,275	0.2%	Rank history: #61 in FY2021 and not on the FY2023–FY2025 lists; down 13 since FY2021.
75	Elizabeth Glaser Pediatric Aids Foundation Top agencies USAID (US Agency for International Development)	$23,211,698	0.2%	Rank history: not on the FY2021 list, #55 in FY2023, #52 in FY2024 and not on the FY2025 list; new.
76	National Association of State Mental Health Program Directors Inc. Top agencies HHS (Department of Health and Human Services)	$22,866,179	0.2%	Rank history: #92 in FY2021, #91 in FY2023, #92 in FY2024 and not on the FY2025 list; up 16 since FY2021.
77	National Marrow Donor Program Top agencies HHS (Department of Health and Human Services)	$22,862,098	0.2%	Rank history: not on the FY2021 list, #82 in FY2023, #81 in FY2024 and #68 in FY2025; new.
78	International Business Initiatives LLC Top agencies USAID (US Agency for International Development)	$22,777,816	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 404 since FY2021.
79	The QED Group LLC Top agencies DSCA (Defense Security Cooperation Agency) USAID (US Agency for International Development)	$22,724,620	0.2%	Rank history: #94 in FY2021 and not on the FY2023–FY2025 lists; up 15 since FY2021.
80	Encompass LLC Top agencies USAID (US Agency for International Development)	$22,432,003	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 163 since FY2021.
81	Kaiser Foundation Health Plan of Washington 2 awardees, including Kaiser Foundation Hospitals Top agencies HHS (Department of Health and Human Services)	$22,408,499	0.2%	Rank history: #66 in FY2021, #93 in FY2023 and not on the FY2024–FY2025 lists; down 15 since FY2021.
82	Linquest Corporation Top agencies USAF (Department of the Air Force)	$22,223,561	0.2%	Rank history: #81 in FY2021, #66 in FY2023, #75 in FY2024 and #63 in FY2025; down 1 since FY2021.
83	G D Arab Limited Company Top agencies Army (Department of the Army)	$22,192,110	0.2%	Rank history: not on the FY2021 list, #95 in FY2023, #86 in FY2024 and #90 in FY2025; up 45 since FY2021.
84	Panagora Group Inc. Top agencies USAID (US Agency for International Development)	$21,675,105	0.2%	Rank history: #77 in FY2021 and not on the FY2023–FY2025 lists; down 7 since FY2021.
85	Axle Informatics, LLC Top agencies HHS (Department of Health and Human Services)	$21,213,303	0.2%	Rank history: #69 in FY2021, #68 in FY2023, #27 in FY2024 and #61 in FY2025; down 16 since FY2021.
86	Filius Corporation Top agencies USAF (Department of the Air Force)	$21,045,945	0.2%	Rank history: not on the FY2021 list, not on the FY2023 list, #78 in FY2024 and #95 in FY2025; up 26 since FY2021.
87	Cyber Engineering and Technical Alliance, LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) USAID (US Agency for International Development)	$20,805,296	0.2%	Rank history: not on the FY2021 list, #51 in FY2023, #40 in FY2024 and #33 in FY2025; up 51 since FY2021.
88	Nova Global Supply and Services LLC Through Valiant Global Defense Services Inc. Top agencies DTRA (Defense Threat Reduction Agency) Army (Department of the Army)	$20,346,350	0.2%	Rank history: #58 in FY2021, #70 in FY2023 and not on the FY2024–FY2025 lists; down 30 since FY2021.
89	KLD Associates Inc. Top agencies DOT (Department of Transportation)	$19,908,928	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 191 since FY2021.
90	Laulima Government Solutions, LLC Top agencies HHS (Department of Health and Human Services)	$19,256,631	0.2%	Rank history: #78 in FY2021, not on the FY2023 list, #95 in FY2024 and #80 in FY2025; down 12 since FY2021.
91	The Boeing Company 9 awardees, including Boeing Aerospace Operations, Inc., Jeppesen Foreflight, Inc. and Tapestry Solutions, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) DOT (Department of Transportation)	$19,021,436	0.2%	Rank history: #46 in FY2021, #53 in FY2023, #55 in FY2024 and #53 in FY2025; down 45 since FY2021.
92	Credence Management Solutions Limited Liability Company Top agencies USAID (US Agency for International Development) USAF (Department of the Air Force)	$18,946,144	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 58 since FY2021.
93	Tanaq Support Services, LLC Top agencies HHS (Department of Health and Human Services)	$18,579,125	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 38 since FY2021.
94	SPN Solutions Inc. Top agencies DHA (Defense Health Agency)	$18,572,352	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 237 since FY2021.
95	Fgs, LLC Top agencies Navy (Department of the Navy)	$18,454,242	0.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #79 in FY2024 and not on the FY2025 list; new.
96	Mpf-Zai Solutions LLC Top agencies HHS (Department of Health and Human Services)	$18,375,545	0.1%	Rank history: not on the FY2021 list, #79 in FY2023, #77 in FY2024 and not on the FY2025 list; up 6 since FY2021.
97	Health Care Service Corporation, A Mutual Legal Reserve Company Top agencies HHS (Department of Health and Human Services)	$18,348,679	0.1%	Rank history: not on the FY2021 list, #74 in FY2023, not on the FY2024 list and #65 in FY2025; up 7 since FY2021.
98	Asrt, Inc. Top agencies HHS (Department of Health and Human Services)	$18,267,716	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 88 since FY2021.
99	Applied Research Associates, Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$18,147,226	0.1%	Rank history: #38 in FY2021, not on the FY2023–FY2024 lists and #76 in FY2025; down 61 since FY2021.
100	Culmen International, LLC Top agencies DTRA (Defense Threat Reduction Agency) USAF (Department of the Air Force)	$17,991,493	0.1%	Rank history: not on the FY2021 list, #46 in FY2023 and not on the FY2024–FY2025 lists; up 57 since FY2021.

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100 of 2,829 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 54199

Code	Net obligations	Largest contractor
541990 All Other Professional, Scientific, and Technical Services	$11,775,078,957	Battelle Memorial Institute

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 $12.4 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 2022 ran Oct 1, 2021 – Sep 30, 2022. 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 FY2021. "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 FY2021 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 54199 contractors in FY2022?

1. Battelle Memorial Institute ($1.49B), 2. The Mitre Corporation ($812M), 3. Sierra Nevada Company, LLC ($594M), 4. Oak Ridge Associated Universities, Incorporated ($368M), 5. DAI Global LLC ($321M), 6. ABT Global LLC ($272M), 7. Chemonics International, Inc. ($239M), 8. Institute for Defense Analyses ($230M), 9. Booz Allen Hamilton Holding Corporation ($209M), 10. Northrop Grumman Corporation ($166M).

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