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List of multinational companies in Connecticut

Tamtam tracks 220 multinational companies headquartered in Connecticut. This list ranks the 50 largest by number of employees on LinkedIn, led by The Cigna Group, Xerox and XPO. Their median headcount is 6,549. Half of them were founded in 1978 or later. The most common headquarters are Stamford (10), Norwalk (5) and Shelton (5).

馃嚭馃嚫 Connecticut50 companiesUpdated Nov 11, 2026

This selection of multinational companies in Connecticut showcases a diverse economic landscape, primarily featuring large corporations. Key players include The Cigna Group, a global health company, and Xerox, which provides innovative technology solutions for the workplace. XPO is a global transportation company, while Pratt & Whitney designs and manufactures advanced propulsion systems for aircraft. The Hartford offers insurance and protection services, and Yale University is a research institution.

A notable pattern among these companies is the concentration of headquarters in specific cities. For example, Norwalk hosts Xerox, Booking Holdings, and FactSet, while Stamford is home to HARMAN International, Gartner, and United Rentals. This indicates a clustering of significant corporate presence within a few urban centers in Connecticut.

#CompanyIndustryHeadquarters EmployeesFounded
1
The Cigna Groupthecignagroup.com

Global health company offering insurance products and health services, partnering worldwide to improve individual and community vitality.

Hospitals and Health Care 馃嚭馃嚫 Bloomfield 50,174 n/a
2
Xeroxxerox.com

It provides innovative technology solutions for the workplace, focusing on print technology, software, services, and financial solutions for clients.

Business Consulting and Services 馃嚭馃嚫 Norwalk 47,247 n/a
3
XPOxpo.com

A global transportation company offering top-tier solutions to leading companies, with diverse opportunities for career growth and impactful work

Truck Transportation 馃嚭馃嚫 Greenwich 38,917 n/a
4
GXO Logistics, Inc.gxo.com

Providing innovative opportunities in logistics through advanced automation, benefiting customers, employees, and investors alike

Transportation, Logistics, Supply Chain and Storage 馃嚭馃嚫 Greenwich 36,174 n/a
5
Pratt & Whitneyrtx.com

Design and manufacture advanced propulsion systems for aircraft, enabling global connectivity, economic growth, and national defense.

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 East Hartford 30,378 n/a
6
Cigna Healthcarecigna.com

Benefits provider, guides customers through healthcare system, empowering them with information and insight to improve health and vitality.

Hospitals and Health Care 馃嚭馃嚫 Bloomfield 29,662 n/a
7
Stanley Black & Decker, Inc.stanleyblackanddecker.com

Provider of tools, fasteners, and infrastructure systems supporting home repair, automotive security, construction, and energy industries with innovation and safety.

Manufacturing 馃嚭馃嚫 New Britain 29,460 n/a
8
HARMAN Internationalharman.com

Designs and manufactures premium audio products and automotive electronics, enabling smarter, safer, and immersive in-cabin vehicle experiences worldwide.

Computers and Electronics Manufacturing 馃嚭馃嚫 Stamford 27,936 1980
9
SS&C Technologiesssctech.com

Provider of cloud-based software and solutions for financial and healthcare industries, serving over 22,000 companies globally.

Software Development 馃嚭馃嚫 Windsor 27,478 1986
10
Gartnergartner.com

A global company providing expert-led research and data-driven insights to help executives make faster, smarter decisions and achieve stronger performance

Information Services 馃嚭馃嚫 Stamford 22,206 1979
11
The Hartfordthehartford.com

The company goes beyond providing insurance to protect individuals and businesses, making an impact through human achievement and comprehensive protection

Financial Services 馃嚭馃嚫 Hartford 21,627 1810
12
Yale Universitynews.yale.edu

Research university fostering global connections, creativity, and innovation, emphasizing student learning and positive worldwide impact.

Higher Education 馃嚭馃嚫 New Haven 19,675 n/a
13
Booking Holdings (NASDAQ: BKNG)bookingholdings.com

Global provider of online travel & related services, offering booking options in over 220 countries through multiple brands, operating in 40+ languages worldwide

Technology, Information and Internet 馃嚭馃嚫 Norwalk 18,737 n/a
14
United Rentalsunitedrentals.com

Largest equipment rental company providing construction, industrial, and specialty solutions with extensive fleet, safety training, and 24/7 support.

Construction 馃嚭馃嚫 Stamford 16,511 1997
15
FactSetfactset.com

Open financial data and software solutions for investment professionals worldwide providing access to analytics for crucial decision making and consistent client service.

Financial Services 馃嚭馃嚫 Norwalk 15,211 1978
16
Pitney Bowespitneybowes.com

Provides digital shipping solutions, mailing innovation, and financial services to businesses and government entities worldwide, simplifying mail and parcel sending.

Software Development 馃嚭馃嚫 Shelton 12,611 1920
17
ESPNjobs.disneycareers.com

Leading multinational sports entertainment company with a wide range of multimedia assets including TV networks, radio, online platforms, magazines, and sports-themed restaurants

Broadcast Media Production and Distribution 馃嚭馃嚫 Bristol 11,732 n/a
18
GeBBS Healthcare Solutionsgebbs.com

A leading provider of Revenue Cycle Management services and Risk Adjustment solutions, utilizing innovative technology and a global workforce to improve financial performance for clients

Hospitals and Health Care 馃嚭馃嚫 East Haven 11,612 2005
19
SHRW, LLCmarriott.com

Branding and hotel management company overseeing 1 Hotels and Homes, Baccarat Hotels and Residences, and Treehouse Hotels after its relaunch in 2025.

Hospitality 馃嚭馃嚫 Stamford 10,128 1980
20
ITT Inc.itt.com

A global technology company providing cutting-edge solutions in motion technologies, industrial process, and connect and control technologies across various industries worldwide

Industrial Machinery Manufacturing 馃嚭馃嚫 Stamford 9,330 n/a
21
Terex Corporationterex.com

A global manufacturing company focused on building essential machines, improving lives, volunteering, and maintaining a safe, inclusive work environment

Machinery Manufacturing 馃嚭馃嚫 Norwalk 8,109 1933
22
GE Capitalgecapital.com

Provides financial solutions to support global infrastructure, partnering with industries to build, move, power, and cure the world, bridging industry and finance.

Financial Services 馃嚭馃嚫 Norwalk 13,000 1932
23
Hubbell Incorporatedhubbell.com

Manufacturer of utility and electrical solutions focused on grid modernization, clean energy, electrification, and energy efficiency worldwide.

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Shelton 7,655 1888
24
TRC Companies, Inc.trccompanies.com

Providing advisory, consulting, construction, engineering, and management services to help clients adapt and achieve sustainable, impactful results.

Environmental Services 馃嚭馃嚫 Windsor 7,463 1969
25
Praxair, Inc - a Linde Companylindeus.com

A global leader in industrial gases and engineering, providing high-quality gases, technologies, and services to diverse markets while promoting sustainability and productivity

Chemical Manufacturing 馃嚭馃嚫 Danbury 6,549 n/a

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26
PerkinElmerperkinelmer.com

A global provider of technology and service solutions for measuring, quantifying, detecting, and reporting in various industries to ensure quality and safety

Biotechnology Research 馃嚭馃嚫 Shelton 6,485 1937
27
Tronoxtronox.com

A global producer of titanium dioxide and inorganic chemicals, specializing in mining, processing, and manufacturing products for various industries worldwide

Chemical Manufacturing 馃嚭馃嚫 Stamford 5,877 2012
28
Sikorskylockheedmartin.com

A global leader in helicopter technology, providing innovative and safe flight solutions for commercial and military markets worldwide since 1939

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Stratford 5,753 1923
29
Amphenolamphenol.com

A Fortune 500 manufacturer with 90,000 employees worldwide, providing key components for electronic devices and networks in daily use

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Wallingford 5,559 n/a
30
LAZ Parkinglazparking.com

A parking management service provider with a people-focused philosophy, offering services in various markets across thousands of locations in the US

Real Estate 馃嚭馃嚫 Hartford 5,078 1981
31
Dynatadynata.com

Global leader in first-party data for insights, activation, and measurement, serving thousands of clients worldwide with trustworthy, precise data solutions for marketing needs

Market Research 馃嚭馃嚫 Shelton 4,715 n/a
32
Crane Companycraneco.com

Long-standing ethical business focused on innovation, disciplined management, strategic acquisitions, and creating value for customers, suppliers, and shareholders.

Manufacturing 馃嚭馃嚫 Stamford 4,696 1855
33
IMS Healthiqvia.com

Provides healthcare data, analytics, and technology solutions to improve clinical, commercial, and real-world outcomes in the life sciences industry.

Hospitals and Health Care 馃嚭馃嚫 Danbury 4,675 1954
34
Moheganmohegangaming.com

This company owns, develops, and manages entertainment resorts and provides online gaming solutions, with operations in the US, Canada, and South Korea

Gambling Facilities and Casinos 馃嚭馃嚫 Uncasville 3,962 1996
35
Electronic Data Systemsdxc.com

A global company founded in 1962 offering electronic data processing management personnel and computer hardware, focusing on large corporations and government contracts

IT Services and IT Consulting 馃嚭馃嚫 West Hartford 3,809 1962
36
Point72point72.com

Global alternative investment firm focusing on fundamental and systematic strategies across asset classes and geographies to deliver superior returns.

Financial Services 馃嚭馃嚫 Stamford 3,559 2014
37
Interactive Brokersinteractivebrokers.com

Provides automated trade execution and custody for diverse financial instruments across global markets, offering advanced tools and research at low cost.

Financial Services 馃嚭馃嚫 Greenwich 3,506 n/a
38
Sacred Heart Universitysacredheart.edu

A Catholic university focused on liberal arts and intellectual traditions, promoting diversity, integrity, leadership, and service for students, faculty, and staff

Higher Education 馃嚭馃嚫 Fairfield 3,411 1963
39
Hexcel Corporationhexcel.com

Production of carbon fiber reinforcements, resin systems, and honeycomb materials focused on lightweight solutions for commercial aerospace industry.

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Stamford 3,357 1948
40
Edgewell Personal Careedgewell.com

Global personal care company with 25+ brands, serving 50+ countries, focusing on efficiency, sustainability, and inclusive workplace culture.

Personal Care Product Manufacturing 馃嚭馃嚫 Shelton 3,354 2015
41
Amphenol Communications Solutionsamphenol-cs.com

Design and manufacture innovative connectors and cable assemblies for communications, mobile, RF, optics, data centers, networking, industrial, and automotive applications.

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 United States 3,169 1932
42
Legrand, North Americalegrand.us

Specialist in electrical and digital building infrastructures serving residential and non-residential markets across North and Central America.

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 West Hartford 3,125 2002
43
DST Systemsssctech.com

A global fintech company offering specialized software solutions and services for insurance, asset management, and other financial industries, with a focus on operational excellence

IT Services and IT Consulting 馃嚭馃嚫 Windsor 3,116 n/a
44
Centerplatesodexolive.us

Providing food and beverage services, hospitality, and event management solutions for sports venues, entertainment arenas, and convention centers.

Food and Beverage Services 馃嚭馃嚫 Stamford 2,953 n/a
45
OP360 (OfficePartners360)op360.com

Global workforce partner offering streamlined outsourcing solutions for brands, delivering omnichannel customer service, sales, technology support, and back-office services to medium and Fortune 500 companies

Outsourcing and Offshoring Consulting 馃嚭馃嚫 Ridgefield 2,785 2006
46
Ethan Allen Global, Inc.ethanallen.com

Innovative furniture retailer with a wide range of styles, offering customization options and environmentally sustainable products, emphasizing excellent service and community involvement

Retail 馃嚭馃嚫 Danbury 2,765 n/a
47
WorldQuantworldquant.com

Global quantitative asset management firm developing and deploying investment strategies across diverse asset classes in international markets through a large network of offices.

Financial Services 馃嚭馃嚫 Old Greenwich 2,731 2007
48
United Technologiesrtx.com

Merger of aerospace and defense companies combining advanced technology and innovation to provide integrated solutions for global security and aviation.

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Farmington 2,724 n/a
49
Mohegan Sunmohegansun.com

A destination offering entertainment, gaming, dining, shopping, luxury hotel, spa, golf, shops, restaurants, bars, and entertainment venues in southeastern Connecticut

Gambling Facilities and Casinos 馃嚭馃嚫 Uncasville 2,661 1996
50
University of New Havennewhaven.edu

Private coeducational university founded in 1920 on the Yale campus Recognized for academic excellence, located in West Haven, with over 9,800 global students

Higher Education 馃嚭馃嚫 West Haven 2,648 1920

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

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