Top 100 Contractors in NAICS 56: Administrative and Support and Waste Management and Remediation Services, FY2025
Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe
The top 10 won 45% of FY2025 NAICS 56 contract dollars
Ranking facts
- Contract obligations
- $68,482,857,232 Net of deobligations, by contracts coded NAICS 56 or a code under it
- Contractors
- 10,279 Parent companies with an obligation
- Largest contractor
- Honeywell International Inc. $7.8 billion, 10.7% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 | $7,796,908,979 | |||
| 2 |
Triad National Security LLC
|
$5,087,344,498 | ||
| 3 | $3,552,976,905 | |||
| 4 | $2,778,427,029 | |||
| 5 |
Ut-Battelle LLC
Top agencies
|
$2,679,775,141 | ||
| 6 | $2,537,032,429 | |||
| 7 |
V2X, Inc.
|
$2,332,235,313 | ||
| 8 | $2,167,963,012 | |||
| 9 | $1,921,935,329 | |||
| 10 |
Ashbritt Inc.
Top agencies
|
$1,830,121,525 | ||
| 11 |
KBR Wyle Services LLC
|
$1,149,492,459 | ||
| 12 | $1,107,146,305 | |||
| 13 | $1,062,510,600 | |||
| 14 | $994,553,799 | |||
| 15 | $852,172,357 | |||
| 16 | $804,652,167 | |||
| 17 | $796,035,008 | |||
| 18 | $718,910,624 | |||
| 19 | $656,365,226 | |||
| 20 | $603,372,648 | |||
| 21 |
Securitas Critical Infrastructure Services Inc.
|
$599,900,424 | ||
| 22 | $597,671,118 | |||
| 23 | $541,154,315 | |||
| 24 | $528,576,869 | |||
| 25 | $527,525,607 | |||
| 26 | $456,126,074 | |||
| 27 |
Fedex Corp
Top agencies
|
$402,769,179 | ||
| 28 | $390,263,043 | |||
| 29 | $389,260,351 | |||
| 30 | $315,397,445 | |||
| 31 | $298,823,424 | |||
| 32 | $293,181,902 | |||
| 33 | $289,456,116 | |||
| 34 |
Peckham Vocational Industries Inc.
|
$260,707,500 | ||
| 35 | $238,840,818 | |||
| 36 |
Bechtel Corp
Top agencies
|
$237,663,874 | ||
| 37 |
Loyalty Support Services
Top agencies
|
$220,781,102 | ||
| 38 | $211,410,602 | |||
| 39 | $206,477,198 | |||
| 40 |
Akima Facilities Operations LLC
|
$195,412,662 | ||
| 41 | $189,833,031 | |||
| 42 |
BC Partners LLP
|
$185,572,257 | ||
| 43 |
J & J Maintenance Inc.
|
$184,911,611 | ||
| 44 |
Inter-CON Security Systems Inc.
|
$184,085,997 | ||
| 45 |
Mvm, Inc.
Top agencies
|
$172,732,300 | ||
| 46 | $171,724,677 | |||
| 47 |
Fleetcor Technologies Inc.
|
$169,862,897 | ||
| 48 |
Tmsab LLC
Top agencies
|
$169,307,091 | ||
| 49 |
Guidehouse Inc.
|
$168,306,448 | ||
| 50 |
Acuity International LLC
|
$168,114,821 | ||
| 51 | $160,871,753 | |||
| 52 | $138,791,951 | |||
| 53 | $136,735,233 | |||
| 54 |
United Cleanup Oak Ridge LLC
Top agencies
|
$132,359,640 | ||
| 55 | $129,847,904 | |||
| 56 | $128,652,490 | |||
| 57 | $126,435,519 | |||
| 58 | $125,781,766 | |||
| 59 | $125,568,331 | |||
| 60 | $124,118,479 | |||
| 61 |
Kerberos International Inc.
|
$122,000,938 | ||
| 62 |
CGI Federal Inc.
Top agencies
|
$120,981,697 | ||
| 63 |
EA Engineering Science and Technology Inc. PBC
|
$118,595,769 | ||
| 64 | $115,739,993 | |||
| 65 | $113,983,984 | |||
| 66 | $111,625,246 | |||
| 67 | $110,020,720 | |||
| 68 | $108,318,335 | |||
| 69 | $105,514,050 | |||
| 70 | $105,461,716 | |||
| 71 |
Serco Inc
|
$104,669,504 | ||
| 72 | $101,351,626 | |||
| 73 | $98,390,769 | |||
| 74 |
DLH Holdings Corp
Top agencies
|
$91,620,401 | ||
| 75 | $89,516,529 | |||
| 76 | $89,344,003 | |||
| 77 |
CDA Incorporated
Top agencies
|
$89,124,916 | ||
| 78 |
Energy Technology Alliance LLC
Top agencies
|
$86,714,314 | ||
| 79 | $86,406,397 | |||
| 80 |
Emcor Group Inc.
|
$85,414,346 | ||
| 81 | $84,603,000 | |||
| 82 |
BAE Systems
Top agencies
|
$82,324,610 | ||
| 83 |
AED Stratecon LLC
Top agencies
|
$81,685,728 | ||
| 84 | $79,246,148 | |||
| 85 | $77,319,103 | |||
| 86 |
Vendtech-Sgi LLC
Top agencies
|
$77,256,082 | ||
| 87 |
Pegasus Support Services LLC
|
$76,792,548 | ||
| 88 | $76,048,253 | |||
| 89 | $75,110,000 | |||
| 90 | $73,458,811 | |||
| 91 | $73,086,226 | |||
| 92 | $72,706,565 | |||
| 93 | $72,050,596 | |||
| 94 | $71,577,757 | |||
| 95 | $71,478,742 | |||
| 96 | $71,320,802 | |||
| 97 |
Koa Lani JV LLC
Top agencies
|
$71,078,627 | ||
| 98 | $71,038,357 | |||
| 99 |
Tiya Services L.L.C.
Top agencies
|
$70,551,971 | ||
| 100 | $69,658,268 |
Show 75 more
100 of 10,279 contractors listed here. See the rest on GovTribe.
Rankings for the codes under NAICS 56
| Code | Net obligations | Largest contractor |
|---|---|---|
| 561 Administrative and Support Services | $55,186,393,525 | Honeywell International Inc. |
| 562 Waste Management and Remediation Services | $13,296,463,706 | Environmental Chemical Corporation |
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 $73.2 billion obligated before deobligations, so they never pass 100%.
- Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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 2025 ran Oct 1, 2024 – Sep 30, 2025. 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 FY2024. "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 FY2024 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 56 contractors in FY2025?
1. Honeywell International Inc. ($7.8B), 2. Triad National Security LLC ($5.09B), 3. Amentum Holdings, Inc. ($3.55B), 4. Fluor Corporation ($2.78B), 5. Ut-Battelle LLC ($2.68B), 6. Consolidated Nuclear Security, LLC ($2.54B), 7. V2X, Inc. ($2.33B), 8. Environmental Chemical Corporation ($2.17B), 9. Pantexas Deterrence, LLC ($1.92B), 10. Ashbritt Inc. ($1.83B).
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