BesaGov

Top federal contractors in Wisconsin

1,442 SAM.gov-registered federal contractors based in Wisconsin. Ranked by lifetime federal award amount. Updated 2026-05-07.

Firms tracked
1,442
Top-50 lifetime $
$39.61B
Top NAICS
8

Top 50 federal contractors in Wisconsin

# Firm City NAICS Lifetime $ Contracts
1 OPTUM PUBLIC SECTOR SOLUTIONS, INC. LA CROSSE 524114 $18.85B 0
2 STATE OF WISCONSIN DEPARTMENT OF HEALTH SERVICES MADISON 923120 $11.87B 0
3 OPTUMSERVE HEALTH SERVICES, INC. LA CROSSE 621111 $3.48B 0
4 WISCONSIN DEPARTMENT OF PUBLIC INSTRUCTION MADISON 541720 $927.03M 0
5 OSHKOSH DEFENSE LLC OSHKOSH 336350 $872.48M 0
6 UNIVERSITY OF WISCONSIN SYSTEM MADISON 541714 $737.81M 0
7 AMTEC CORPORATION JANESVILLE 332993 $408.94M 0
8 DEPARTMENT OF MILITARY AFFAIRS WISCONSIN MADISON 921190 $297.47M 0
9 WORKFORCE DEVELOPMENT, WISCONSIN DEPARTMENT OF MADISON 519290 $244.92M 0
10 GE PRECISION HEALTHCARE LLC WAUKESHA 334517 $194.50M 0
11 WISCONSIN PHYSICIANS SERVICE INSURANCE CORP. MADISON 524292 $122.52M 0
12 GOODWILL INDUSTRIES OF SOUTHEASTERN WISCONSIN, INC. GREENDALE 722310 $98.88M 0
13 THE MEDICAL COLLEGE OF WISCONSIN, INC. MILWAUKEE 621399 $97.37M 0
14 TRC GLOBAL MOBILITY, INC MILWAUKEE 531390 $97.31M 0
15 UNIVERSITY OF WISCONSIN SYSTEM MILWAUKEE 611310 $69.71M 0
16 ONEIDA NATION GREEN BAY 623110 $69.41M 0
17 KONECRANES NUCLEAR EQUIPMENT & SERVICES, LLC NEW BERLIN 333923 $62.34M 0
18 WHR GROUP, INC PEWAUKEE 531390 $59.76M 0
19 THE LEWIN GROUP, INC. LA CROSSE 541611 $57.65M 0
20 TRANE U.S. INC. LA CROSSE 541330 $53.22M 0
21 JOHNSON CONTROLS, INC MILWAUKEE 334290 $52.15M 0
22 FAIRBANKS MORSE, LLC BELOIT 333618 $51.99M 0
23 PIERCE MANUFACTURING INC APPLETON 333120 $48.25M 0
24 ONEIDA ENVIRONMENTAL, LLC MILWAUKEE 541620 $44.01M 0
25 J. F. BRENNAN COMPANY, INC. LA CROSSE 332312 $43.78M 0
26 SUPERIOR HEALTH QUALITY ALLIANCE INC MADISON 541618 $42.67M 0
27 LAKESIDE FOODS INC MANITOWOC 311421 $42.17M 0
28 FLEXION INC MADISON 541511 $41.87M 0
29 MICHELS CONSTRUCTION, INC. BROWNSVILLE 237130 $38.78M 0
30 KRUEGER INTERNATIONAL, INC. GREEN BAY 337214 $35.17M 0
31 DEPARTMENT OF JUSTICE WISCONSIN MADISON — $31.57M 0
32 OPTUMSERVE TECHNOLOGY SERVICES, INC. LA CROSSE 541350 $29.01M 0
33 CCS LINTECH JV LLC MILWAUKEE 541519 $28.89M 0
34 MASTERS GALLERY FOODS, INCORPORATED PLYMOUTH 311513 $28.30M 0
35 S3 AERODEFENSE LLC MILWAUKEE 336320 $26.67M 0
36 INDUSTRIES FOR THE BLIND AND VISUALLY IMPAIRED, INC. WEST ALLIS 315990 $26.33M 0
37 MARQUETTE UNIVERSITY MILWAUKEE 541715 $25.42M 0
38 DERCO AEROSPACE, INC. MILWAUKEE 332722 $25.11M 0
39 COMMAND CYBER SOLUTIONS LLC MILWAUKEE 541512 $24.78M 0
40 ADVANCIA AERONAUTICS, LLC MILWAUKEE 622110 $24.59M 0
41 CITY OF MADISON MADISON 334220 $24.03M 0
42 ALLIED METAL TECH, LLC GREENVILLE 332993 $23.85M 0
43 SUSTAINMENT & RESTORATION SERVICES, LLC MILWAUKEE 541519 $23.60M 0
44 IDSC HOLDINGS LLC KENOSHA 332216 $23.26M 0
45 ORC INDUSTRIES, INC. LA CROSSE 314910 $23.19M 0
46 SCHUTT INDUSTRIES OF CLINTONVILLE, WIS., INC. CLINTONVILLE 333998 $22.93M 0
47 ROEN SALVAGE CO. STURGEON BAY 237990 $21.21M 0
48 STATZ CORP MIDDLETON 332722 $20.51M 0
49 DRS NAVAL POWER SYSTEMS INC MENOMONEE FALLS 334413 $19.75M 0
50 POMP'S TIRE SERVICE, INC. NEW BERLIN 326211 $18.98M 0

Top NAICS in Wisconsin

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FAQ

How many federal contractors are based in Wisconsin?

BesaGov tracks 1,442 SAM.gov-registered firms whose physical state of business is Wisconsin. The list updates weekly as new entities register or update their SAM profile.

Who are the largest federal contractors in Wisconsin?

By lifetime federal award amount, the largest Wisconsin-based contractors include OPTUM PUBLIC SECTOR SOLUTIONS, INC., STATE OF WISCONSIN DEPARTMENT OF HEALTH SERVICES, OPTUMSERVE HEALTH SERVICES, INC.. See the full top-50 list above.

Can I get notified when a new firm registers in Wisconsin?

Yes. Sign up for the free weekly Wisconsin digest above. We'll email you new SAM.gov registrations and award activity for the state — no login required.

Is this data official?

Firm registrations come from SAM.gov entity public extracts. Lifetime award totals come from USAspending.gov. Both are official U.S. government data sources, refreshed weekly.