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Top federal contractors in Connecticut

1,088 SAM.gov-registered federal contractors based in Connecticut. Ranked by lifetime federal award amount. Updated 2026-06-23.

Firms tracked
1,088
Top-50 lifetime $
$29.01B
Top NAICS
8

Top 50 federal contractors in Connecticut

# Firm City NAICS Lifetime $ Contracts
1 Electric Boat Corporation Groton 332722 $16.12B 1,849
2 Rtx Corporation East Hartford 336412 $4.89B 5,911
3 Sikorsky Aircraft Corporation Stratford 336412 $4.49B 36,134
4 Yale Univ New Haven 611310 $773.46M 180
5 Connecticut Department Of Education Hartford 541720 $646.95M 5
6 Department Of Public Health Connecticut Hartford 518210 $187.37M 35
7 Hamilton Sundstrand Corporation Windsor Locks 336413 $176.73M 9,651
8 State Of Connecticut Labor Dept Wethersfield 921190 $133.41M 5
9 University Of Connecticut Storrs 541715 $121.19M 92
10 Dept Of Energy & Environmental Protection Hartford 923120 $119.80M 11
11 Ameritech Contracting Llc Berlin 238220 $102.85M 129
12 Regan Technologies Corp Middletown 541519 $96.60M 347
13 Mental Health & Addiction Services Conne Hartford 923120 $79.89M 4
14 Rite-Solutions, Inc. Pawcatuck 334419 $74.13M 74
15 Cw Resources, Inc. New Britain 561720 $66.92M 241
16 University Of Connecticut Health Center Farmington 611310 $57.80M 57
17 Celeen Llc Mashantucket 541330 $57.12M 65
18 Danbury Mission Technologies, Llc Danbury 334511 $55.06M 35
19 University Of Connecticut Storrs Mansfield 923110 $53.75M 17
20 Cartus Corporation Danbury 531390 $47.63M 240
21 Sonalysts Inc Waterford 611430 $47.27M 164
22 Mclaughlin Research Corporation New London 541330 $45.75M 223
23 Pitney Bowes Inc. Stamford 532420 $40.60M 4,127
24 Plowshare Group, Inc Stamford 541810 $39.00M 34
25 Emprise Corporation Ledyard 541330 $38.79M 51
26 Gartner, Inc. Stamford 541519 $37.20M 1,197
27 Emergency Services And Public Protection, Department Of Middletown 922120 $36.95M 43
28 Acmt, Inc. Manchester 336412 $34.98M 22
29 Lifecare, Inc Shelton 541110 $27.89M 124
30 Applied Physical Sciences Corp Groton 541715 $25.45M 76
31 Mohawk Northeast Inc Plantsville 336611 $24.46M 25
32 Ipsos Public Affairs, Llc Norwalk 541611 $22.99M 107
33 Eri Services, Inc. Bridgeport 541330 $22.53M 3
34 Ensign-Bickford Aerospace & Defense Company Simsbury 325998 $19.36M 171
35 Triumph Engine Control Systems Llc West Hartford 336413 $17.25M 58
36 Mashantucket Pequot Tribal Nation Mashantucket 561920 $15.91M 1
37 Colt'S Manufacturing Company, Llc West Hartford 332994 $15.49M 78
38 Ethan Allen Retail, Inc. Danbury 337122 $13.68M 616
39 City Of New Haven New Haven 531190 $13.43M 3
40 Treadwell Corporation (Delaware) Thomaston 333613 $11.94M 780
41 Save The Children Federation, Inc. Fairfield 541990 $11.91M 4
42 O F Mossberg & Sons Inc North Haven 332994 $11.81M 34
43 Hartford Hospital Hartford 611310 $11.80M 8
44 Survival Systems USA Inc Groton 532490 $10.95M 97
45 The Hartford Provision Company South Windsor 311991 $10.57M 6,175
46 Beacon Industries, Inc. Newington 336412 $10.54M 50
47 Murray Benjamin Electric Co Llc Stamford 335999 $10.14M 1,171
48 Rotair Aerospace Corp Bridgeport 332510 $9.74M 506
49 Precision Combustion, Inc. North Haven 541715 $9.54M 51
50 Ward Leonard Ct Llc Thomaston 335312 $9.53M 201

Top NAICS in Connecticut

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FAQ

How many federal contractors are based in Connecticut?

BesaGov tracks 1,088 SAM.gov-registered firms whose physical state of business is Connecticut. The list updates weekly as new entities register or update their SAM profile.

Who are the largest federal contractors in Connecticut?

By lifetime federal award amount, the largest Connecticut-based contractors include ELECTRIC BOAT CORPORATION, RTX CORPORATION, SIKORSKY AIRCRAFT CORPORATION. See the full top-50 list above.

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

Yes. Sign up for the free weekly Connecticut 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.