Top 100 Contractors in NAICS 813: Religious, Grantmaking, Civic, Professional, and Similar Organizations, FY2024

Name: Top 100 Contractors in NAICS 813: Religious, Grantmaking, Civic, Professional, and Similar Organizations, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 45% of FY2024 NAICS 813 contract dollars

Contract obligations: $212,055,136 Net of deobligations, by contracts coded NAICS 813 or a code under it
Contractors: 972 Parent companies with an obligation
Largest contractor: General Dynamics Corporation $27.9 million, 12.5% 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	General Dynamics Corporation Through General Dynamics Information Technology, Inc. Top agencies DHA (Defense Health Agency) Army (Department of the Army) USAF (Department of the Air Force)	$27,884,376	12.5%	Rank history: not on the FY2021 list, #1 in FY2022, #1 in FY2023 and #1 in FY2025; unchanged since FY2023.
2	Joint Commission On Accreditation of Healthcare Organizations Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$20,148,132	9.0%	Rank history: #1 in FY2021, #2 in FY2022, #2 in FY2023 and #2 in FY2025; unchanged since FY2023.
3	Tetra Tech, Inc. Through Ard, Inc. Top agencies USAID (US Agency for International Development)	$16,465,111	7.4%	Rank history: #8 in FY2021, #3 in FY2022, #3 in FY2023 and #4 in FY2025; unchanged since FY2023.
4	Quality Insights, Inc. Top agencies VA (Department of Veterans Affairs)	$11,186,909	5.0%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2025; new.
5	Aveco Holding AG Through Wisag Technical Military Support Services GMBH & Co. KG Top agencies DECA (Defense Commissary Agency)	$7,652,801	3.4%	Rank history: not on the FY2021 list, #8 in FY2022, #5 in FY2023 and not on the FY2025 list; unchanged since FY2023.
6	Nevada System of Higher Education Top agencies Commerce (Department of Commerce)	$5,242,209	2.3%	Rank history: not on the FY2021 list, #54 in FY2022, not on the FY2023 list and #12 in FY2025; returned.
7	Commission On Accreditation of Rehabilitation Facilities Top agencies VA (Department of Veterans Affairs)	$2,947,653	1.3%	Rank history: #6 in FY2021, #27 in FY2022, #26 in FY2023 and #10 in FY2025; up 19 since FY2023.
8	North American Association of Central Cancer Registries Inc. Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$2,911,466	1.3%	Rank history: #12 in FY2021, #14 in FY2022, #10 in FY2023 and #11 in FY2025; up 2 since FY2023.
9	National Disability Rights Network Inc. Top agencies HHS (Department of Health and Human Services)	$2,890,435	1.3%	Rank history: #9 in FY2021, #13 in FY2022, #11 in FY2023 and #6 in FY2025; up 2 since FY2023.
10	Provider Resources Inc Top agencies VA (Department of Veterans Affairs)	$2,740,663	1.2%	Rank history: #29 in FY2021, #34 in FY2022, #20 in FY2023 and not on the FY2025 list; up 10 since FY2023.
11	National Association for Public Health Statistics and Information Systems, Inc. Top agencies DOS (Department of State) DCSA (Defense Counterintelligence and Security Agency) HHS (Department of Health and Human Services)	$2,654,249	1.2%	Rank history: #15 in FY2021, #26 in FY2022, #24 in FY2023 and #25 in FY2025; up 13 since FY2023.
12	Civil Rights Department Top agencies EEOC (Equal Employment Opportunity Commission)	$2,429,335	1.1%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2025; new.
13	Human Rights New York State Division Of Top agencies EEOC (Equal Employment Opportunity Commission)	$2,269,400	1.0%	Rank history: not on the FY2021 list, #16 in FY2022, not on the FY2023 list and #13 in FY2025; returned.
14	Maximus Federal Services, Inc. Top agencies VA (Department of Veterans Affairs)	$2,173,816	1.0%	Rank history: #76 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
15	Island Peer Review Organization Inc. Top agencies VA (Department of Veterans Affairs)	$2,073,503	0.9%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
16	Institute of Transportation Engineers, Inc. Top agencies DOT (Department of Transportation)	$2,031,661	0.9%	Rank history: #69 in FY2021, #5 in FY2022, #14 in FY2023 and #26 in FY2025; down 2 since FY2023.
17	Sae International Top agencies DOT (Department of Transportation)	$2,021,007	0.9%	Rank history: #13 in FY2021, #24 in FY2022, #21 in FY2023 and #8 in FY2025; up 4 since FY2023.
18	National Marine Sanctuary Foundation Top agencies DOI (Department of the Interior)	$1,960,000	0.9%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
19	Cornell University Top agencies Commerce (Department of Commerce)	$1,520,334	0.7%	Rank history: #35 in FY2021, #36 in FY2022, not on the FY2023 list and #14 in FY2025; returned.
20	Civil Rights Commission Ohio Top agencies EEOC (Equal Employment Opportunity Commission)	$1,475,970	0.7%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2025; new.
21	Little Trammel Smb, LLC Top agencies Army (Department of the Army)	$1,390,800	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
22	Jesuit Refugee Service USA Top agencies DHS (Department of Homeland Security)	$1,348,188	0.6%	Rank history: #25 in FY2021, #29 in FY2022, #27 in FY2023 and #18 in FY2025; up 5 since FY2023.
23	Pennsylvania Human Relations Commission Top agencies EEOC (Equal Employment Opportunity Commission)	$1,270,100	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
24	American Association for the Advancement of Science Top agencies DOS (Department of State) Treasury (Department of the Treasury) HHS (Department of Health and Human Services)	$1,206,923	0.5%	Rank history: #14 in FY2021, #23 in FY2022, #17 in FY2023 and #31 in FY2025; down 7 since FY2023.
25	The Commonwealth of Massachusetts Through Administration and Finance, Massachusetts Executive Office For Top agencies EEOC (Equal Employment Opportunity Commission)	$1,202,145	0.5%	Rank history: #19 in FY2021, #31 in FY2022, #30 in FY2023 and not on the FY2025 list; up 5 since FY2023.
26	Capital Factory Properties LLC Top agencies Army (Department of the Army)	$1,200,190	0.5%	Rank history: #43 in FY2021, #47 in FY2022, #33 in FY2023 and #17 in FY2025; up 7 since FY2023.
27	Academy Health Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$1,150,000	0.5%	Rank history: #65 in FY2021, #30 in FY2022, #57 in FY2023 and #49 in FY2025; up 30 since FY2023.
28	Secretary of State Connecticut Through Human Rights & Opportunities Connecticut Commission On Top agencies EEOC (Equal Employment Opportunity Commission)	$1,125,955	0.5%	Rank history: #27 in FY2021, #28 in FY2022, #28 in FY2023 and not on the FY2025 list; unchanged since FY2023.
29	XL Associates, Inc. Top agencies USAID (US Agency for International Development)	$1,026,537	0.5%	Rank history: #3 in FY2021, #11 in FY2022, #89 in FY2023 and not on the FY2025 list; up 60 since FY2023.
30	Texas A&M Transportation Institute Top agencies Commerce (Department of Commerce)	$995,617	0.4%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2025; new.
31	Purdue University Top agencies Commerce (Department of Commerce)	$994,347	0.4%	Rank history: #68 in FY2021, #50 in FY2022, #37 in FY2023 and #27 in FY2025; up 6 since FY2023.
32	Board of Regents of the University of Nebraska Top agencies Commerce (Department of Commerce)	$980,873	0.4%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2025; new.
33	Texas Workforce Commission Top agencies EEOC (Equal Employment Opportunity Commission)	$980,590	0.4%	Rank history: not on the FY2021–FY2023 lists and #30 in FY2025; new.
34	Juice Consulting LLC Top agencies OSD (Office of the Secretary of Defense) Army (Department of the Army)	$955,499	0.4%	Rank history: not on the FY2021 list, #48 in FY2022, not on the FY2023 list and #96 in FY2025; up 70 since FY2023.
35	The American Society of Human Genetics, Incorporated Top agencies HHS (Department of Health and Human Services)	$944,270	0.4%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2025; up 108 since FY2023.
36	American Association of State Highway and Transportation Officials Top agencies DOT (Department of Transportation)	$944,078	0.4%	Rank history: not on the FY2021–FY2023 lists and #66 in FY2025; up 168 since FY2023.
37	University of North Carolina At Chapel Hill Top agencies Commerce (Department of Commerce)	$934,161	0.4%	Rank history: not on the FY2021–FY2023 lists and #28 in FY2025; new.
38	Department of Human Rights Illinois Top agencies EEOC (Equal Employment Opportunity Commission)	$916,625	0.4%	Rank history: not on the FY2021 list, #38 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
39	Florida Department of Corrections Through Florida Commission On Human Relations Top agencies EEOC (Equal Employment Opportunity Commission)	$910,360	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
40	American Hospital Association Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$908,389	0.4%	Rank history: #45 in FY2021, #58 in FY2022, #45 in FY2023 and #24 in FY2025; up 5 since FY2023.
41	Wisconsin State of Through Wisconsin Department of Workforce Development Top agencies EEOC (Equal Employment Opportunity Commission)	$854,110	0.4%	Rank history: #38 in FY2021, #45 in FY2022, #40 in FY2023 and not on the FY2025 list; down 1 since FY2023.
42	Rtca Inc. Top agencies DOT (Department of Transportation) NASA (National Aeronautics and Space Administration) DHS (Department of Homeland Security)	$801,544	0.4%	Rank history: #42 in FY2021, #33 in FY2022, #69 in FY2023 and #37 in FY2025; up 27 since FY2023.
43	National Academy of Sciences Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration) DOI (Department of the Interior)	$799,208	0.4%	Rank history: #47 in FY2021, #56 in FY2022, #48 in FY2023 and not on the FY2025 list; up 5 since FY2023.
44	Gartner, Inc. Top agencies DOT (Department of Transportation) NASA (National Aeronautics and Space Administration)	$795,298	0.4%	Rank history: not on the FY2021 list, #89 in FY2022, #63 in FY2023 and not on the FY2025 list; up 19 since FY2023.
45	Deloitte Through Deloitte Consulting LLP Top agencies DOE (Department of Energy)	$770,863	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
46	John Wiley & Sons Inc. Top agencies Navy (Department of the Navy)	$769,335	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
47	The National Fallen Firefighters Foundation Top agencies DHS (Department of Homeland Security)	$736,501	0.3%	Rank history: #74 in FY2021, #80 in FY2022, #41 in FY2023 and not on the FY2025 list; down 6 since FY2023.
48	Full Armor Group, Inc. Top agencies Navy (Department of the Navy)	$701,149	0.3%	Rank history: #53 in FY2021, #41 in FY2022, #38 in FY2023 and not on the FY2025 list; down 10 since FY2023.
49	Allen Construction Company Inc Top agencies DOI (Department of the Interior)	$700,841	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
50	Idemma LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$688,819	0.3%	Rank history: #48 in FY2021, #67 in FY2022, #54 in FY2023 and #58 in FY2025; up 4 since FY2023.
51	State of Iowa Through Iowa Department of Executive Office Top agencies EEOC (Equal Employment Opportunity Commission)	$677,950	0.3%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023 and not on the FY2025 list; up 2 since FY2023.
52	National Spectrum Consortium Inc. Top agencies Commerce (Department of Commerce)	$677,539	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
53	The Westervelt Company Top agencies Army (Department of the Army)	$643,500	0.3%	Rank history: not on the FY2021 list, #6 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
54	Riparian Ranch LLC Top agencies Army (Department of the Army)	$604,000	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
55	Open Geospatial Consortium Inc. Top agencies Commerce (Department of Commerce) DHS (Department of Homeland Security) DOI (Department of the Interior)	$589,000	0.3%	Rank history: #33 in FY2021, #40 in FY2022, #70 in FY2023 and not on the FY2025 list; up 15 since FY2023.
56	Veritas Management Group, Inc. Top agencies Army (Department of the Army) DHA (Defense Health Agency)	$573,691	0.3%	Rank history: not on the FY2021 list, #68 in FY2022, #67 in FY2023 and #60 in FY2025; up 11 since FY2023.
57	Corrections Colorado Department of Through Colorado Department of Regulatory Agencies Top agencies EEOC (Equal Employment Opportunity Commission)	$573,230	0.3%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2023 and not on the FY2025 list; up 1 since FY2023.
58	American College of Medical Toxicology, Inc. Top agencies HHS (Department of Health and Human Services)	$566,500	0.3%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2025; new.
59	Challenge America Top agencies VA (Department of Veterans Affairs)	$557,000	0.2%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2025; new.
60	Oregon State of Through Labor & Industries Oregon Bureau Of Top agencies EEOC (Equal Employment Opportunity Commission)	$551,300	0.2%	Rank history: #59 in FY2021, #60 in FY2022, #55 in FY2023 and not on the FY2025 list; down 5 since FY2023.
61	Association of Public Health Laboratories, Inc. (The) Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$545,962	0.2%	Rank history: #21 in FY2021, #19 in FY2022, #80 in FY2023 and not on the FY2025 list; up 19 since FY2023.
62	National Conference of State Legislatures Top agencies DOE (Department of Energy)	$521,977	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
63	Department of Civil Rights Michigan Top agencies EEOC (Equal Employment Opportunity Commission)	$521,890	0.2%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2025; new.
64	American Association of Blood Banks, Inc. Top agencies DHA (Defense Health Agency)	$517,016	0.2%	Rank history: #63 in FY2021, #72 in FY2022, #71 in FY2023 and #44 in FY2025; up 7 since FY2023.
65	American National Standards Institute Incorporated Top agencies Commerce (Department of Commerce) DHS (Department of Homeland Security) USDA (Department of Agriculture)	$495,296	0.2%	Rank history: not on the FY2021–FY2022 lists, #75 in FY2023 and not on the FY2025 list; up 10 since FY2023.
66	American Psychological Association Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$464,357	0.2%	Rank history: #44 in FY2021, not on the FY2022 list, #59 in FY2023 and #38 in FY2025; down 7 since FY2023.
67	National Conference of Bar Examiners	$459,678	0.2%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023 and #56 in FY2025; up 19 since FY2023.
68	Maryland Commission on Civil Rights Top agencies EEOC (Equal Employment Opportunity Commission)	$456,560	0.2%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2023 and not on the FY2025 list; up 5 since FY2023.
69	Mack Global LLC Top agencies USAF (Department of the Air Force) DOJ (Department of Justice) AFRH (Armed Forces Retirement Home)	$452,206	0.2%	Rank history: #62 in FY2021, #77 in FY2022, #78 in FY2023 and #35 in FY2025; up 9 since FY2023.
70	Music Ministry International Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$443,504	0.2%	Rank history: #73 in FY2021, #69 in FY2022, #61 in FY2023 and not on the FY2025 list; down 9 since FY2023.
71	Accreditation Council for Graduate Medical Education Top agencies USUHS (DOD Uniformed Services University of the Health Sciences) DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$436,035	0.2%	Rank history: #94 in FY2021, not on the FY2022 list, #72 in FY2023 and #62 in FY2025; up 1 since FY2023.
72	Military Operations Research Society, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$420,000	0.2%	Rank history: #80 in FY2021, #87 in FY2022, #85 in FY2023 and #43 in FY2025; up 13 since FY2023.
73	Accreditation Association for Ambulatory Health Care, Inc. Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$414,036	0.2%	Rank history: #56 in FY2021, #43 in FY2022, not on the FY2023 list and #61 in FY2025; up 197 since FY2023.
74	Air Force Sergeants Association Top agencies USAF (Department of the Air Force)	$411,173	0.2%	Rank history: not on the FY2021 list, #91 in FY2022, #91 in FY2023 and not on the FY2025 list; up 17 since FY2023.
75	Arizona Attorney Generals Office Top agencies EEOC (Equal Employment Opportunity Commission)	$406,250	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
76	The Amyotrophic Lateral Sclerosis Association Top agencies HHS (Department of Health and Human Services)	$406,097	0.2%	Rank history: #66 in FY2021, #98 in FY2022, #52 in FY2023 and #93 in FY2025; down 24 since FY2023.
77	Colonial School District Through Delaware Department of Labor Top agencies EEOC (Equal Employment Opportunity Commission)	$399,250	0.2%	Rank history: #82 in FY2021, #78 in FY2022, #87 in FY2023 and not on the FY2025 list; up 10 since FY2023.
78	The Arc of the District of Columbia Inc. Top agencies HHS (Department of Health and Human Services)	$387,938	0.2%	Rank history: #81 in FY2021, #93 in FY2022, #83 in FY2023 and not on the FY2025 list; up 5 since FY2023.
79	National Association of County and City Health Officials Top agencies DHS (Department of Homeland Security)	$386,919	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
80	Human Affairs Commission South Carolina Top agencies EEOC (Equal Employment Opportunity Commission)	$384,455	0.2%	Rank history: not on the FY2021–FY2023 lists and #52 in FY2025; new.
81	Institute of Electrical & Electronics Engineers Inc. Top agencies MDA (DOD Missile Defense Agency) DHS (Department of Homeland Security) DISA (Defense Information Systems Agency)	$363,240	0.2%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2025; new.
82	Kansas Human Rights Commission Top agencies EEOC (Equal Employment Opportunity Commission)	$362,010	0.2%	Rank history: not on the FY2021–FY2023 lists and #55 in FY2025; new.
83	Leota Professional Resources, LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$361,440	0.2%	Rank history: not on the FY2021 list, #76 in FY2022, #90 in FY2023 and #79 in FY2025; up 7 since FY2023.
84	National Fish and Wildlife Foundation Top agencies DOI (Department of the Interior)	$357,000	0.2%	Rank history: not on the FY2021 list, #9 in FY2022, #46 in FY2023 and not on the FY2025 list; down 38 since FY2023.
85	Gulf of Maine Lobster Foundation, Inc. Top agencies Commerce (Department of Commerce)	$349,975	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 271 since FY2023.
86	Training and Rehabilitation. Nevada Department of Employment Top agencies EEOC (Equal Employment Opportunity Commission)	$349,085	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
87	Executive Office of the State of Utah Top agencies EEOC (Equal Employment Opportunity Commission)	$341,880	0.2%	Rank history: not on the FY2021 list, #96 in FY2022, not on the FY2023 list and #53 in FY2025; returned.
88	The Milken Institute Top agencies HHS (Department of Health and Human Services)	$332,866	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
89	American College of Surgeons Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$331,422	0.1%	Rank history: #18 in FY2021, #17 in FY2022, #31 in FY2023 and #15 in FY2025; down 58 since FY2023.
90	National Association of School Nurses, Incorporated Top agencies HHS (Department of Health and Human Services)	$323,970	0.1%	Rank history: #83 in FY2021, #88 in FY2022, #81 in FY2023 and not on the FY2025 list; down 9 since FY2023.
91	America Movil Peru Sac Top agencies DOS (Department of State)	$320,789	0.1%	Rank history: not on the FY2021–FY2023 lists and #95 in FY2025; new.
92	National Contract Management Association Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) HHS (Department of Health and Human Services)	$308,986	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 54 since FY2023.
93	State of Indiana Through Civil Rights Commission Indiana Top agencies EEOC (Equal Employment Opportunity Commission)	$306,200	0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023 and not on the FY2025 list; up 5 since FY2023.
94	State of New Jersey Through New Jersey Department of Law & Public Safety Top agencies EEOC (Equal Employment Opportunity Commission)	$305,745	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
95	The Institute of Electrical and Electronics Engineers Incorp Through Institute of Electrical & Electronics Engineers Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$298,120	0.1%	Rank history: #55 in FY2021, #57 in FY2022, #66 in FY2023 and not on the FY2025 list; down 29 since FY2023.
96	American Medical Informatics Association, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$292,700	0.1%	Rank history: not on the FY2021–FY2023 lists and #68 in FY2025; up 6 since FY2023.
97	Acog Foundation Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$268,660	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 16 since FY2023.
98	Commission On Human Rights, Idaho Top agencies EEOC (Equal Employment Opportunity Commission)	$268,270	0.1%	Rank history: not on the FY2021–FY2023 lists and #57 in FY2025; new.
99	Laredo Technical Services, Inc. Top agencies USAF (Department of the Air Force)	$264,252	0.1%	Rank history: #95 in FY2021, #94 in FY2022, not on the FY2023 list and #67 in FY2025; up 7 since FY2023.
100	Naval Academy Athletic Association Top agencies Navy (Department of the Navy)	$262,080	0.1%	Rank history: #7 in FY2021, #7 in FY2022, #9 in FY2023 and #5 in FY2025; down 91 since FY2023.

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100 of 972 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 813

Code	Net obligations	Largest contractor
8139 Business, Professional, Labor, Political, and Similar Organizations	$131,367,177	General Dynamics Corporation
8133 Social Advocacy Organizations	$56,766,055	Tetra Tech, Inc.
8131 Religious Organizations	$21,882,042	Aveco Holding AG
8134 Civic and Social Organizations	$1,461,670	The Milken 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 $223 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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 813 contractors in FY2024?

1. General Dynamics Corporation ($27.9M), 2. Joint Commission On Accreditation of Healthcare Organizations ($20.1M), 3. Tetra Tech, Inc. ($16.5M), 4. Quality Insights, Inc. ($11.2M), 5. Aveco Holding AG ($7.65M), 6. Nevada System of Higher Education ($5.24M), 7. Commission On Accreditation of Rehabilitation Facilities ($2.95M), 8. North American Association of Central Cancer Registries Inc. ($2.91M), 9. National Disability Rights Network Inc. ($2.89M), 10. Provider Resources Inc ($2.74M).

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