Top 100 Contractors in NAICS 56121: Facilities Support Services, Jul 2025–Jun 2026

Name: Top 100 Contractors in NAICS 56121: Facilities Support Services, Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 69% of NAICS 56121 contract dollars from July 2025 through June 2026

Contract obligations: $39,962,443,479 Net of deobligations, by contracts coded NAICS 56121 or a code under it
Contractors: 1,636 Parent companies with an obligation
Largest contractor: Honeywell International Inc. $6.43 billion, 15.5% 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	Honeywell International Inc. 5 awardees, including National Technology & Engineering Solutions of Sandia, LLC and Honeywell Federal Manufacturing & Technologies, LLC Top agencies DOE (Department of Energy) Navy (Department of the Navy) USAF (Department of the Air Force)	$6,434,733,079	15.5%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	Triad National Security LLC 2 awardees Top agencies DOE (Department of Energy) DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy)	$5,458,269,089	13.1%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; unchanged since Jul 2024–Jun 2025.
3	Fluor Corporation 4 awardees, including Savannah River Nuclear Solutions LLC, Fluor Intercontinental, Inc. and Fluor Intercontinental Germany GMBH Top agencies DOE (Department of Energy) USAF (Department of the Air Force) Navy (Department of the Navy)	$3,549,335,025	8.5%	Rank history: #11 in FY2021, #10 in FY2022, #15 in FY2023, #5 in FY2024 and #5 in FY2025; up 2 since Jul 2024–Jun 2025.
4	Ut-Battelle LLC Top agencies DOE (Department of Energy)	$3,090,480,030	7.4%	Rank history: #5 in FY2021, #5 in FY2022, #5 in FY2023, #4 in FY2024 and #3 in FY2025; down 1 since Jul 2024–Jun 2025.
5	Consolidated Nuclear Security, LLC Top agencies DOE (Department of Energy) Navy (Department of the Navy) Army (Department of the Army)	$2,948,045,894	7.1%	Rank history: #4 in FY2021, #4 in FY2022, #3 in FY2023, #3 in FY2024 and #4 in FY2025; down 1 since Jul 2024–Jun 2025.
6	Pantexas Deterrence, LLC Top agencies DOE (Department of Energy) Navy (Department of the Navy) USAF (Department of the Air Force)	$1,706,217,884	4.1%	Rank history: not on the FY2021–FY2024 lists and #7 in FY2025; up 1 since Jul 2024–Jun 2025.
7	V2X, Inc. 2 awardees, including V2X Systems LLC and Vectrus Federal Services GMBH Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$1,704,577,280	4.1%	Rank history: not on the FY2021–FY2023 lists, #6 in FY2024 and #6 in FY2025; down 1 since Jul 2024–Jun 2025.
8	Amentum Holdings, Inc. 17 awardees, including Amentum Services, Inc., Amentum Parsons Logistics Services LLC and PAE Government Services, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$1,526,754,758	3.7%	Rank history: not on the FY2021–FY2023 lists, #20 in FY2024 and #8 in FY2025; unchanged since Jul 2024–Jun 2025.
9	Grimes Aerospace Company 2 awardees, including Honeywell Federal Manufacturing & Technologies, LLC and Honeywell International Inc. Top agencies DOE (Department of Energy) Navy (Department of the Navy) USAF (Department of the Air Force)	$1,224,351,412	2.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
10	KBR Wyle Services LLC 3 awardees, including KBR Services, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$1,122,495,366	2.7%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #9 in FY2025; down 1 since Jul 2024–Jun 2025.
11	Mission Support & Test Services LLC Top agencies DOE (Department of Energy) USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency)	$956,315,599	2.3%	Rank history: #9 in FY2021, #9 in FY2022, #9 in FY2023, #9 in FY2024 and #10 in FY2025; down 1 since Jul 2024–Jun 2025.
12	The GEO Group, Inc. 3 awardees, including B.i. Incorporated and GEO Secure Services, LLC Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$437,997,461	1.1%	Rank history: #10 in FY2021, #11 in FY2022, #13 in FY2023, #12 in FY2024 and #12 in FY2025; unchanged since Jul 2024–Jun 2025.
13	General Dynamics Corporation 6 awardees, including General Dynamics OTS (Wilkes Barre), LLC, General Dynamics Land Systems Inc. and General Dynamics Mission Systems, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$426,575,295	1.0%	Rank history: #49 in FY2021, #18 in FY2022, #8 in FY2023, #15 in FY2024 and #16 in FY2025; up 2 since Jul 2024–Jun 2025.
14	Strategic Storage Partners, Llc. Top agencies DOE (Department of Energy)	$424,026,021	1.0%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
15	Arctic Slope Regional Corporation 9 awardees, including Asrc Federal Field Services, LLC, Asrc Federal Gulf State Constructors LLC and Asrc Federal Facilities Logistics LLC Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) NASA (National Aeronautics and Space Administration)	$399,600,058	1.0%	Rank history: #18 in FY2021, #19 in FY2022, #19 in FY2023, #21 in FY2024 and #13 in FY2025; down 1 since Jul 2024–Jun 2025.
16	Leidos Holdings, Inc. 5 awardees, including Leidos, Inc. and Hanford Mission Integration Solutions, LLC Top agencies NSF (National Science Foundation) DOE (Department of Energy) Army (Department of the Army)	$309,411,514	0.7%	Rank history: #15 in FY2021, #16 in FY2022, #17 in FY2023, #17 in FY2024 and #14 in FY2025; down 3 since Jul 2024–Jun 2025.
17	Nana Regional Corporation, Inc. 6 awardees, including Akima Global Logistics, LLC, Akima Facilities Operations LLC and Akima Intra-Data, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$273,779,309	0.7%	Rank history: not on the FY2021–FY2023 lists, #35 in FY2024 and #17 in FY2025; up 62 since Jul 2024–Jun 2025.
18	Skookum Educational Programs Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$257,931,050	0.6%	Rank history: #28 in FY2021, #28 in FY2022, #26 in FY2023, #26 in FY2024 and #21 in FY2025; up 7 since Jul 2024–Jun 2025.
19	Nova Space Solutions, LLC Top agencies NASA (National Aeronautics and Space Administration)	$222,742,114	0.5%	Rank history: not on the FY2021–FY2024 lists and #23 in FY2025; up 100 since Jul 2024–Jun 2025.
20	Loyalty Support Services Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$212,587,019	0.5%	Rank history: #35 in FY2021, #31 in FY2022, #34 in FY2023, #31 in FY2024 and #15 in FY2025; up 2 since Jul 2024–Jun 2025.
21	Akima Facilities Operations LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) HHS (Department of Health and Human Services)	$173,453,236	0.4%	Rank history: not on the FY2021 list, #43 in FY2022, #41 in FY2023, #25 in FY2024 and #19 in FY2025; down 2 since Jul 2024–Jun 2025.
22	Professional Contract Services, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$152,636,506	0.4%	Rank history: #38 in FY2021, #34 in FY2022, #36 in FY2023, #27 in FY2024 and #20 in FY2025; up 6 since Jul 2024–Jun 2025.
23	Blackwatch International Corporation Top agencies DMEA (Defense Microelectronics Activity)	$128,512,086	0.3%	Rank history: not on the FY2021–FY2025 lists; up 151 since Jul 2024–Jun 2025.
24	J & J Maintenance Inc. Top agencies Army (Department of the Army) DECA (Defense Commissary Agency) Navy (Department of the Navy)	$117,198,859	0.3%	Rank history: #26 in FY2021, #22 in FY2022, #25 in FY2023, #28 in FY2024 and #24 in FY2025; up 2 since Jul 2024–Jun 2025.
25	Jones Lang Lasalle Americas, Inc. Top agencies GSA (General Services Administration) DECA (Defense Commissary Agency) DOT (Department of Transportation)	$106,857,872	0.3%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #26 in FY2025; up 7 since Jul 2024–Jun 2025.
26	Action Facilities Management Inc. Top agencies GSA (General Services Administration) DOJ (Department of Justice) DHS (Department of Homeland Security)	$104,793,358	0.3%	Rank history: #71 in FY2021, #62 in FY2022, #47 in FY2023, #45 in FY2024 and #30 in FY2025; up 7 since Jul 2024–Jun 2025.
27	Chugach Logistics and Facility Services JV, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$104,628,909	0.3%	Rank history: not on the FY2021–FY2023 lists, #68 in FY2024 and #32 in FY2025; up 8 since Jul 2024–Jun 2025.
28	Emcor Group Inc. 2 awardees, including Emcor Government Services, Inc. and Mesa Energy Systems, Inc. Top agencies GSA (General Services Administration) NARA (National Archives and Records Administration) GAO (Government Accountability Office)	$97,191,121	0.2%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2023, #39 in FY2024 and #28 in FY2025; up 8 since Jul 2024–Jun 2025.
29	Pegasus Support Services LLC Top agencies Army (Department of the Army) GSA (General Services Administration) DHS (Department of Homeland Security)	$96,434,993	0.2%	Rank history: not on the FY2021–FY2023 lists, #41 in FY2024 and #31 in FY2025; up 17 since Jul 2024–Jun 2025.
30	ECC International, LLC Top agencies USAF (Department of the Air Force)	$89,793,172	0.2%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; down 1 since Jul 2024–Jun 2025.
31	Koa Lani JV LLC Top agencies Navy (Department of the Navy)	$74,316,573	0.2%	Rank history: #56 in FY2021, #36 in FY2022, #42 in FY2023, #47 in FY2024 and #38 in FY2025; up 3 since Jul 2024–Jun 2025.
32	T&H Services, LLC Top agencies Army (Department of the Army) DOS (Department of State) Navy (Department of the Navy)	$73,213,593	0.2%	Rank history: not on the FY2021–FY2024 lists and #33 in FY2025; up 7 since Jul 2024–Jun 2025.
33	Pond Constructors Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$73,056,556	0.2%	Rank history: not on the FY2021 list, #84 in FY2022, #49 in FY2023, #43 in FY2024 and #42 in FY2025; up 14 since Jul 2024–Jun 2025.
34	South Dade Air Conditioning & Refrigeration Inc. Top agencies GSA (General Services Administration) OPM (Office of Personnel Management) Army (Department of the Army)	$71,085,810	0.2%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023, #58 in FY2024 and #41 in FY2025; up 14 since Jul 2024–Jun 2025.
35	Tiya Services L.L.C. Top agencies Army (Department of the Army)	$70,865,624	0.2%	Rank history: not on the FY2021–FY2023 lists, #44 in FY2024 and #39 in FY2025; up 10 since Jul 2024–Jun 2025.
36	Pride Industries Top agencies USAF (Department of the Air Force) Treasury (Department of the Treasury) Army (Department of the Army)	$64,530,718	0.2%	Rank history: #22 in FY2021, #21 in FY2022, #21 in FY2023, #24 in FY2024 and #34 in FY2025; down 16 since Jul 2024–Jun 2025.
37	Four Seasons Environmental Inc. Top agencies HHS (Department of Health and Human Services) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$63,026,335	0.2%	Rank history: #63 in FY2021, #57 in FY2022, #60 in FY2023, #62 in FY2024 and #45 in FY2025; up 24 since Jul 2024–Jun 2025.
38	Inussuk A / S Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency) Navy (Department of the Navy)	$61,768,876	0.1%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; up 3 since Jul 2024–Jun 2025.
39	Chenega Base & Logistics Services LLC Top agencies Army (Department of the Army)	$59,765,928	0.1%	Rank history: not on the FY2021–FY2023 lists, #74 in FY2024 and #66 in FY2025; up 31 since Jul 2024–Jun 2025.
40	Alutiiq Operations Services, LLC Top agencies USAF (Department of the Air Force) Treasury (Department of the Treasury) Navy (Department of the Navy)	$59,429,351	0.1%	Rank history: not on the FY2021–FY2025 lists; up 294 since Jul 2024–Jun 2025.
41	Dsc-Emi Maintenance Solutions, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) DODEA (Department of Defense Education Activity)	$59,243,258	0.1%	Rank history: not on the FY2021–FY2022 lists, #57 in FY2023, #56 in FY2024 and #46 in FY2025; up 14 since Jul 2024–Jun 2025.
42	K'oyitl'ots'ina, Limited 3 awardees, including Yukon Fire Protection Services, Inc., Kcorp Support Services, Inc. and Kcorp Technology Services, Inc. Top agencies GSA (General Services Administration) DHS (Department of Homeland Security) SSA (Social Security Administration)	$59,003,722	0.1%	Rank history: not on the FY2021–FY2024 lists and #56 in FY2025; up 170 since Jul 2024–Jun 2025.
43	Vanquish Worldwide L.L.C. Top agencies Army (Department of the Army)	$55,804,131	0.1%	Rank history: not on the FY2021–FY2024 lists and #59 in FY2025; up 51 since Jul 2024–Jun 2025.
44	Raven Services JV LLC 2 awardees, including Raven Services Corp Top agencies GSA (General Services Administration) DOT (Department of Transportation) NARA (National Archives and Records Administration)	$54,793,329	0.1%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; up 22 since Jul 2024–Jun 2025.
45	Parsons Corporation Through Xator LLC Top agencies DOS (Department of State)	$54,737,828	0.1%	Rank history: not on the FY2021–FY2023 lists, #10 in FY2024 and #11 in FY2025; down 34 since Jul 2024–Jun 2025.
46	Afognak Native Corporation 2 awardees, including "Alutiiq Logistics & Maintenance Services, Llc" and Alutiiq Solutions, LLC Top agencies Navy (Department of the Navy) DOS (Department of State) DOE (Department of Energy)	$52,436,566	0.1%	Rank history: #21 in FY2021, #27 in FY2022, #30 in FY2023, #86 in FY2024 and #55 in FY2025; up 127 since Jul 2024–Jun 2025.
47	Alutiiq Information Management, LLC Top agencies DOS (Department of State)	$51,403,983	0.1%	Rank history: not on the FY2021–FY2023 lists, #99 in FY2024 and not on the FY2025 list; up 40 since Jul 2024–Jun 2025.
48	Weston Solutions Holdings Inc Through Weston Solutions Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$50,874,609	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
49	Pacific Design Builders, LLC Top agencies Navy (Department of the Navy)	$50,633,398	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
50	The Building People LLC Top agencies DOE (Department of Energy) Army (Department of the Army) GSA (General Services Administration)	$50,476,563	0.1%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023, #51 in FY2024 and #47 in FY2025; down 7 since Jul 2024–Jun 2025.
51	Electronic Metrology Laboratory, LLC Top agencies GSA (General Services Administration) SSA (Social Security Administration) Treasury (Department of the Treasury)	$50,424,739	0.1%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2023, #61 in FY2024 and #50 in FY2025; up 7 since Jul 2024–Jun 2025.
52	Gana-A' Yoo, Limited 3 awardees, including Six Mile Nika JV, LLC, Yukon Management, LLC and Kaiyuh Services, LLC Top agencies DHS (Department of Homeland Security) DOI (Department of the Interior) Army (Department of the Army)	$48,696,284	0.1%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; new, not ranked in Jul 2024–Jun 2025.
53	Readiness Management Support LC Top agencies USAF (Department of the Air Force)	$48,543,531	0.1%	Rank history: not on the FY2021 list, #91 in FY2022, not on the FY2023 list, #65 in FY2024 and #48 in FY2025; down 4 since Jul 2024–Jun 2025.
54	Hospital Housekeeping Systems LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) DHA (Defense Health Agency)	$48,267,782	0.1%	Rank history: not on the FY2021–FY2024 lists and #49 in FY2025; up 18 since Jul 2024–Jun 2025.
55	Tunista Logistics Solutions LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$47,570,505	0.1%	Rank history: not on the FY2021–FY2023 lists, #81 in FY2024 and #51 in FY2025; up 1 since Jul 2024–Jun 2025.
56	Valiant Integrated Services LLC 2 awardees, including Valiant Government Services LLC and Valiant / Alca JV LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$47,335,776	0.1%	Rank history: not on the FY2021 list, #67 in FY2022, #71 in FY2023, #92 in FY2024 and #57 in FY2025; up 8 since Jul 2024–Jun 2025.
57	King & George, LLC Top agencies Army (Department of the Army) DOT (Department of Transportation) GSA (General Services Administration)	$46,997,533	0.1%	Rank history: #46 in FY2021, #38 in FY2022, #43 in FY2023, #66 in FY2024 and #54 in FY2025; up 32 since Jul 2024–Jun 2025.
58	Battelle Memorial Institute Top agencies NSF (National Science Foundation)	$46,750,125	0.1%	Rank history: #68 in FY2021, #51 in FY2022, #61 in FY2023, #64 in FY2024 and #62 in FY2025; up 25 since Jul 2024–Jun 2025.
59	Red River Science & Technology, LLC Top agencies Army (Department of the Army)	$46,203,747	0.1%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023, #84 in FY2024 and #44 in FY2025; up 16 since Jul 2024–Jun 2025.
60	KBR Diego Garcia, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$44,706,028	0.1%	Rank history: #39 in FY2021, #50 in FY2022, #52 in FY2023, #54 in FY2024 and #53 in FY2025; down 6 since Jul 2024–Jun 2025.
61	Tatitlek Corporation Through Tatitlek Technologies, LLC Top agencies DOS (Department of State)	$43,323,282	0.1%	Rank history: not on the FY2021–FY2022 lists, #69 in FY2023, #60 in FY2024 and #52 in FY2025; down 2 since Jul 2024–Jun 2025.
62	J&J and Alms Mission Support Solutions, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DHA (Defense Health Agency)	$41,194,166	0.1%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; up 14 since Jul 2024–Jun 2025.
63	Siemens Industry Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$41,075,536	0.1%	Rank history: not on the FY2021–FY2023 lists, #87 in FY2024 and #71 in FY2025; up 11 since Jul 2024–Jun 2025.
64	Frontline King George JV LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$40,926,986	0.1%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; up 47 since Jul 2024–Jun 2025.
65	Chugach Alaska Corporation 2 awardees, including Chugach Consolidated Solutions, LLC and Wolf Creek Federal Services LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$40,353,770	0.1%	Rank history: #25 in FY2021, #26 in FY2022, #23 in FY2023, #42 in FY2024 and #98 in FY2025; up 71 since Jul 2024–Jun 2025.
66	Tsay Professional Services, Inc. Top agencies Army (Department of the Army)	$40,026,651	0.1%	Rank history: #61 in FY2021, #53 in FY2022, #84 in FY2023, not on the FY2024 list and #94 in FY2025; up 35 since Jul 2024–Jun 2025.
67	Nve, Inc. Top agencies Treasury (Department of the Treasury) USDA (Department of Agriculture) NRC (Nuclear Regulatory Commission)	$39,835,494	0.1%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2023, #77 in FY2024 and #93 in FY2025; up 23 since Jul 2024–Jun 2025.
68	CMI Management, LLC Top agencies DHS (Department of Homeland Security) GSA (General Services Administration) HHS (Department of Health and Human Services)	$39,228,988	0.1%	Rank history: not on the FY2021–FY2025 lists; up 131 since Jul 2024–Jun 2025.
69	KTH Services JV, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$39,149,592	0.1%	Rank history: not on the FY2021–FY2025 lists; up 81 since Jul 2024–Jun 2025.
70	The Timken Company Through CGI Federal Inc. Top agencies DOJ (Department of Justice)	$39,031,418	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
71	Teamstaff Inc. Through DLH Solutions Inc. Top agencies VA (Department of Veterans Affairs)	$38,966,533	0.1%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2023, #30 in FY2024 and #27 in FY2025; down 50 since Jul 2024–Jun 2025.
72	Technica LLC Top agencies Army (Department of the Army)	$38,736,281	0.1%	Rank history: #44 in FY2021, #56 in FY2022, #63 in FY2023, #72 in FY2024 and not on the FY2025 list; down 1 since Jul 2024–Jun 2025.
73	Nika Technologies Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$38,690,487	0.1%	Rank history: not on the FY2021 list, #93 in FY2022, not on the FY2023 list, #55 in FY2024 and not on the FY2025 list; down 11 since Jul 2024–Jun 2025.
74	Waseyabek Federal Services, L.L.C. Top agencies DOE (Department of Energy)	$38,685,368	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
75	Kgjj Engineering Solutions, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$38,235,223	0.1%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023, #83 in FY2024 and #36 in FY2025; down 31 since Jul 2024–Jun 2025.
76	Ho-Chunk, Inc. 3 awardees, including HCI Management Services Company, Dynamic-Hhs JV, LLC and All Native Synergies Company Top agencies DOS (Department of State) Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$38,110,972	0.1%	Rank history: not on the FY2021–FY2024 lists and #72 in FY2025; up 40 since Jul 2024–Jun 2025.
77	Centerra Integrated Facilities Services, LLC Top agencies Army (Department of the Army) GSA (General Services Administration) DISA (Defense Information Systems Agency)	$37,338,815	0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; up 3 since Jul 2024–Jun 2025.
78	American Ordnance LLC Top agencies Army (Department of the Army)	$37,198,194	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
79	DAE Sung LLC Top agencies GSA (General Services Administration) HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$36,285,453	0.1%	Rank history: not on the FY2021–FY2022 lists, #97 in FY2023, #88 in FY2024 and #78 in FY2025; up 3 since Jul 2024–Jun 2025.
80	Nelson Refrigeration Inc. Top agencies DECA (Defense Commissary Agency)	$36,114,784	0.1%	Rank history: not on the FY2021–FY2023 lists, #69 in FY2024 and #43 in FY2025; down 43 since Jul 2024–Jun 2025.
81	Brillient Corporation Top agencies DHS (Department of Homeland Security)	$35,947,528	0.1%	Rank history: #40 in FY2021, not on the FY2022 list, #44 in FY2023, #49 in FY2024 and #40 in FY2025; down 39 since Jul 2024–Jun 2025.
82	Jll-Midnight Sun Ifms LLC Top agencies Navy (Department of the Navy) DHA (Defense Health Agency)	$34,939,971	0.1%	Rank history: #75 in FY2021, #68 in FY2022, #87 in FY2023, #90 in FY2024 and #70 in FY2025; up 9 since Jul 2024–Jun 2025.
83	Facility Services Management, Inc. Top agencies Army (Department of the Army) DHA (Defense Health Agency) NARA (National Archives and Records Administration)	$34,252,329	0.1%	Rank history: #45 in FY2021, #40 in FY2022, #35 in FY2023, #36 in FY2024 and #60 in FY2025; down 32 since Jul 2024–Jun 2025.
84	Northern Management Services, Inc. Top agencies GSA (General Services Administration) DOS (Department of State) DOJ (Department of Justice)	$33,831,161	0.1%	Rank history: not on the FY2021 list, #99 in FY2022, #96 in FY2023, not on the FY2024 list and #80 in FY2025; up 21 since Jul 2024–Jun 2025.
85	Pacarctic, LLC Top agencies DOS (Department of State) GSA (General Services Administration) Commerce (Department of Commerce)	$33,457,480	0.1%	Rank history: not on the FY2021–FY2024 lists and #67 in FY2025; up 35 since Jul 2024–Jun 2025.
86	Charles River Laboratories International Inc. Through Charles River Laboratories, Inc. Top agencies HHS (Department of Health and Human Services)	$33,091,129	0.1%	Rank history: not on the FY2021–FY2024 lists and #75 in FY2025; up 10 since Jul 2024–Jun 2025.
87	Melwood Horticultural Training Center, Inc. Top agencies Army (Department of the Army) USDA (Department of Agriculture) DHS (Department of Homeland Security)	$33,073,495	0.1%	Rank history: not on the FY2021 list, #78 in FY2022, not on the FY2023 list, #97 in FY2024 and #76 in FY2025; up 20 since Jul 2024–Jun 2025.
88	All In Solutions LLC Top agencies VA (Department of Veterans Affairs)	$31,734,561	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
89	R & D Maintenance Services Inc. Top agencies Army (Department of the Army)	$31,506,352	0.1%	Rank history: #87 in FY2021, #73 in FY2022, not on the FY2023–FY2024 lists and #65 in FY2025; down 24 since Jul 2024–Jun 2025.
90	LB & B Associates Inc. Top agencies GSA (General Services Administration) Commerce (Department of Commerce) AOUSC (Administrative Office of the U.S. Courts)	$31,345,626	0.1%	Rank history: #79 in FY2021, #70 in FY2022 and not on the FY2023–FY2025 lists; up 43 since Jul 2024–Jun 2025.
91	Guidehouse Inc. Through Aptim Federal Services, LLC Top agencies Army (Department of the Army)	$30,188,120	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
92	Criterion Corporation Top agencies USAF (Department of the Air Force)	$29,419,282	0.1%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; up 14 since Jul 2024–Jun 2025.
93	Aleut O&M Services, LLC Top agencies Army (Department of the Army)	$29,393,682	0.1%	Rank history: not on the FY2021 list, #96 in FY2022, #92 in FY2023, #79 in FY2024 and #82 in FY2025; down 12 since Jul 2024–Jun 2025.
94	BAE Systems 2 awardees, including BAE Systems Ordnance Systems Inc. Top agencies Army (Department of the Army)	$29,282,822	0.1%	Rank history: not on the FY2021–FY2023 lists, #22 in FY2024 and #29 in FY2025; down 76 since Jul 2024–Jun 2025.
95	Westech International, Inc. Top agencies Army (Department of the Army)	$28,930,017	0.1%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; up 31 since Jul 2024–Jun 2025.
96	CGI Federal Inc. Top agencies DOJ (Department of Justice)	$28,331,108	0.1%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; down 56 since Jul 2024–Jun 2025.
97	Nakupuna Solutions, LLC Top agencies Navy (Department of the Navy)	$27,557,491	0.1%	Rank history: not on the FY2021 list, #87 in FY2022, #89 in FY2023 and not on the FY2024–FY2025 lists; up 33 since Jul 2024–Jun 2025.
98	Tbp&Jj Worldwide Services, LLC Top agencies DOT (Department of Transportation) Navy (Department of the Navy)	$27,416,712	0.1%	Rank history: not on the FY2021–FY2025 lists; up 168 since Jul 2024–Jun 2025.
99	Vectrus-J&J Facilities Support, LLC Top agencies Navy (Department of the Navy)	$27,375,295	0.1%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; down 2 since Jul 2024–Jun 2025.
100	Enviremedial Services, Inc. Top agencies Army (Department of the Army)	$27,141,014	0.1%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; up 12 since Jul 2024–Jun 2025.

Show 75 more

100 of 1,636 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 56121

Code	Net obligations	Largest contractor
561210 Facilities Support Services	$39,962,443,479	Honeywell International 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 $41.6 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.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Jul 2024–Jun 2025. "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.
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 56121 contractors in Jul 2025–Jun 2026?

1. Honeywell International Inc. ($6.43B), 2. Triad National Security LLC ($5.46B), 3. Fluor Corporation ($3.55B), 4. Ut-Battelle LLC ($3.09B), 5. Consolidated Nuclear Security, LLC ($2.95B), 6. Pantexas Deterrence, LLC ($1.71B), 7. V2X, Inc. ($1.7B), 8. Amentum Holdings, Inc. ($1.53B), 9. Grimes Aerospace Company ($1.22B), 10. KBR Wyle Services LLC ($1.12B).

On GovTribe

Research every contractor on this list

Every contract, task order and IDV they hold
Their subsidiaries, teammates and competitors
Open opportunities they're positioned for
Alerts when they win new work

Try for free Login