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Companies in Connecticut

1,000 companies in Connecticut.

Discover 1,000 companies headquartered in Connecticut, spanning manufacturing, construction, and industrial sectors. Browse by city — including Stamford, Hartford, New Haven or by industry, and open any profile for its location, website, size, and NAICS/SIC classification.

Advanced Robot SolutionsStratford, Connecticut, United States Advanced Trauma Solutions Professionals, LlcSouthington, Connecticut, United States Advanced Genetics LabMonroe, Connecticut, United States Advantage Business Systems, Inc.New Haven, Connecticut, United States Advantage Energy LlcWest Hartford, Connecticut, United States Advantage Overhead DoorHaddam, Connecticut, United States Advantage Realty CommercialDanbury, Connecticut, United States Advantage Career TrainingBridgeport, Connecticut, United States Advantage Maintenance IncNew Haven, Connecticut, United States Advanced SurveyingNorwalk, Connecticut, United States Advanced Computer Technologies Inc.Norwalk, Connecticut, United States Affordable DecoratingWallingford, Connecticut, United States Advantage Consulting Services - CtBethel, Connecticut, United States Advantage Dental Group LlcEast Lyme, Connecticut, United States Adventure RecoveryLitchfield, Connecticut, United States Advantage Home & Environmental Inspections, LlcWilton, Connecticut, United States Advenio Capital ManagementGreenwich, Connecticut, United States Advantage Occupational MedicineBridgeport, Connecticut, United States Advent TechnologiesEast Hartford, Connecticut, United States · Industrial & mechanical Advantage Personal TrainingStonington, Connecticut, United States Adventure Rock, Inc.Brookfield, Connecticut, United States Adviceone Llc CareersGlastonbury, Connecticut, United States Adviceone Advisory Services, LlcGlastonbury, Connecticut, United States Adviceone Empowerment CoachingGlastonbury, Connecticut, United States

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Frequently asked questions

How many companies are based in Connecticut?

1,000 companies in the directory are headquartered in Connecticut, browsable by city or by industry.

What information is included for each company?

Every listing includes the company name, location, website, employee size, revenue range where available, and NAICS/SIC classification, with a link to the full profile.

Where does this directory come from?

Listings are compiled and maintained by Factur, a sales and marketing firm for B2B manufacturers. Any company can request an update or removal from its profile page.