# The 30 largest multinational companies in Stamford

Tamtam tracks 56 multinational companies headquartered in Stamford. This list ranks the 30 largest by number of employees on LinkedIn, led by HARMAN International, Gartner and United Rentals. Their median headcount is 2,050. Half of them were founded in 1983 or later.

This selection of multinational companies in Stamford includes well-established firms in manufacturing, technology, and services. Many of these companies have substantial global operations. Examples include HARMAN International, which designs and manufactures audio products and automotive electronics, and Gartner, a global provider of expert-led research and data-driven insights. United Rentals is a large equipment rental company, while ITT Inc. offers solutions in motion technologies and industrial process.

A notable pattern among these companies is the prevalence of manufacturing and industrial firms alongside significant representation from information services and financial sectors. This suggests a diverse economic base in Stamford, with companies like Hexcel Corporation focusing on aerospace materials and Tronox specializing in titanium dioxide production.

🇺🇸 Stamford · 30 companies · Updated Nov 14, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [HARMAN International](https://www.tamtam.ai/c/harman-international) (harman.com)<br>Designs and manufactures premium audio products and automotive electronics, enabling smarter, safer, and immersive in-cabin vehicle experiences worldwide. | Computers and Electronics Manufacturing | 🇺🇸 Stamford | 27,936 | 1980 |
| 2 | [Gartner](https://www.tamtam.ai/c/gartner) (gartner.com)<br>A global company providing expert-led research and data-driven insights to help executives make faster, smarter decisions and achieve stronger performance | Information Services | 🇺🇸 Stamford | 22,206 | 1979 |
| 3 | [United Rentals](https://www.tamtam.ai/c/united-rentals) (unitedrentals.com)<br>Largest equipment rental company providing construction, industrial, and specialty solutions with extensive fleet, safety training, and 24/7 support. | Construction | 🇺🇸 Stamford | 16,511 | 1997 |
| 4 | [SHRW, LLC](https://www.tamtam.ai/c/shrw-llc) (marriott.com)<br>Branding and hotel management company overseeing 1 Hotels and Homes, Baccarat Hotels and Residences, and Treehouse Hotels after its relaunch in 2025. | Hospitality | 🇺🇸 Stamford | 10,128 | 1980 |
| 5 | [ITT Inc.](https://www.tamtam.ai/c/itt-inc) (itt.com)<br>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 | 🇺🇸 Stamford | 9,330 |  |
| 6 | [Tronox](https://www.tamtam.ai/c/tronox) (tronox.com)<br>A global producer of titanium dioxide and inorganic chemicals, specializing in mining, processing, and manufacturing products for various industries worldwide | Chemical Manufacturing | 🇺🇸 Stamford | 5,877 | 2012 |
| 7 | [Crane Company](https://www.tamtam.ai/c/crane-company) (craneco.com)<br>Long-standing ethical business focused on innovation, disciplined management, strategic acquisitions, and creating value for customers, suppliers, and shareholders. | Manufacturing | 🇺🇸 Stamford | 4,696 | 1855 |
| 8 | [Point72](https://www.tamtam.ai/c/point72) (point72.com)<br>Global alternative investment firm focusing on fundamental and systematic strategies across asset classes and geographies to deliver superior returns. | Financial Services | 🇺🇸 Stamford | 3,559 | 2014 |
| 9 | [Hexcel Corporation](https://www.tamtam.ai/c/hexcel-corporation) (hexcel.com)<br>Production of carbon fiber reinforcements, resin systems, and honeycomb materials focused on lightweight solutions for commercial aerospace industry. | Aviation and Aerospace Component Manufacturing | 🇺🇸 Stamford | 3,357 | 1948 |
| 10 | [Centerplate](https://www.tamtam.ai/c/centerplate) (sodexolive.us)<br>Providing food and beverage services, hospitality, and event management solutions for sports venues, entertainment arenas, and convention centers. | Food and Beverage Services | 🇺🇸 Stamford | 2,953 |  |
| 11 | [AIFS](https://www.tamtam.ai/c/aifs) (aifs.com)<br>A leading cultural exchange organization organizing programs such as college study abroad, au pair placement, internships, camp counseling, high school study, and travel | Education Administration Programs | 🇺🇸 Stamford | 2,292 | 1964 |
| 12 | [Daymon](https://www.tamtam.ai/c/daymon) (daymon.com)<br>Provides end-to-end private brand development services including strategy, product development, quality assurance, supplier management, sales, and branding solutions. | Business Consulting and Services | 🇺🇸 Stamford | 2,262 | 1970 |
| 13 | [ISG (Information Services Group)](https://www.tamtam.ai/c/isg-information-services-group) (isg-one.com)<br>Global AI-focused technology research and advisory firm helping organizations optimize technology investments and achieve operational excellence and growth. | Information Services | 🇺🇸 Stamford | 2,189 | 2006 |
| 14 | [Conair LLC](https://www.tamtam.ai/c/conair-llc) (conair.com)<br>Design and manufacture of personal care, kitchen appliances, cookware, hair accessories, cosmetic and travel products sold globally. | Manufacturing | 🇺🇸 Stamford | 2,093 | 1959 |
| 15 | [Cristal](https://www.tamtam.ai/c/cristal) (tronox.com)<br>A leading producer of titanium dioxide and zircon products, with a global footprint in mining, processing, and sale of mineral sands | Chemical Manufacturing | 🇺🇸 Stamford | 2,050 |  |
| 16 | [Gen Re](https://www.tamtam.ai/c/gen-re) (genre.com)<br>Provides treaty and facultative reinsurance services globally with expert underwriting, actuarial, and claims support tailored to client needs. | Insurance | 🇺🇸 Stamford | 1,861 | 1921 |
| 17 | [Au Pair in America](https://www.tamtam.ai/c/au-pair-in-america) (aupairinamerica.com)<br>Provider of cultural exchange experiences through live-in child care assistance, placing over 110,000 au pairs in 43 states since 1986 | Individual and Family Services | 🇺🇸 Stamford | 1,633 | 1986 |
| 18 | [Octagon](https://www.tamtam.ai/c/octagon) (octagon.com)<br>A global agency specializing in sports, entertainment, and culture, providing creative marketing, sponsorship consulting, athlete representation, and event management services worldwide | Advertising Services | 🇺🇸 Stamford | 1,454 | 1983 |
| 19 | [BlueTriton Brands](https://www.tamtam.ai/c/bluetriton-brands) (bluetriton.com)<br>A leading provider of responsibly sourced spring and purified water products, promoting sustainability through natural resource management and community engagement | Food and Beverage Services | 🇺🇸 Stamford | 1,249 |  |
| 20 | [KAYAK](https://www.tamtam.ai/c/kayak) (kayak.com)<br>Global leader in travel search, offering tools for confident trip planning Part of a network of brands focusing on seamless travel experiences worldwide | Technology, Information and Internet | 🇺🇸 Stamford | 1,104 | 2004 |
| 21 | [WWE](https://www.tamtam.ai/c/wwe) (wwe.com)<br>A global entertainment company delivering family-friendly content through television, digital media, and publishing platforms to a massive global audience | Entertainment Providers | 🇺🇸 Stamford | 1,051 |  |
| 22 | [Rizing](https://www.tamtam.ai/c/rizing) (rizing.com)<br>A global SAP partner offering strategy, implementation, and support for SAP HCM, EAM, and Retail/Fashion industries, driving business transformation with industry expertise | IT Services and IT Consulting | 🇺🇸 Stamford | 989 | 2006 |
| 23 | [ENGin](https://www.tamtam.ai/c/engin) (enginprogram.org)<br>A non-profit organization connecting Ukrainians with English-speaking peers for free online conversation practice to improve spoken English and intercultural skills | Non-profit Organizations | 🇺🇸 Stamford | 760 | 2020 |
| 24 | [Crisil Coalition Greenwich](https://www.tamtam.ai/c/crisil-coalition-greenwich) (greenwich.com)<br>A leading provider of strategic benchmarking and analytics to the financial services industry, offering actionable insights to improve business performance | Financial Services | 🇺🇸 Stamford | 660 |  |
| 25 | [Castleton Commodities International](https://www.tamtam.ai/c/castleton-commodities-international) (cci.com)<br>Energy trading and infrastructure asset investing supported by advanced analytics, fundamental research, and a focus on sustainable, reliable energy. | Oil and Gas | 🇺🇸 Stamford | 623 | 2001 |
| 26 | [Americares](https://www.tamtam.ai/c/americares) (americares.org)<br>A global nonprofit organization dedicated to saving lives and improving health for over 40 years Visit wwwamericaresorg for more information | Non-profit Organizations | 🇺🇸 Stamford | 614 | 1979 |
| 27 | [ReneSola Ltd.](https://www.tamtam.ai/c/renesola-ltd) (emeren.com)<br>Global solar project developer and operator with operations in over 10 countries, formerly known as ReneSola Power Ltd, now rebranded as Emeren Group Ltd | Renewable Energy Power Generation | 🇺🇸 Stamford | 580 | 2005 |
| 28 | [Affinion Group](https://www.tamtam.ai/c/affinion-group) (tenerity.com)<br>Affinion helps companies build customer loyalty through targeted marketing and subscription-based lifestyle services, generating revenue for marketing partners worldwide | Advertising Services | 🇺🇸 Stamford | 574 |  |
| 29 | [OdysseyRe](https://www.tamtam.ai/c/odysseyre) (odysseyre.com)<br>Provides diverse property, casualty, and specialty reinsurance solutions globally through multiple offices, part of a major financial holdings group. | Insurance | 🇺🇸 Stamford | 571 |  |
| 30 | [Rizing Consumer Industries](https://www.tamtam.ai/c/rizing-consumer-industries) (rizing.com)<br>Leader in retail and consumer products for SAP software, providing specialized solutions and consulting services to optimize SAP experience worldwide | IT Services and IT Consulting | 🇺🇸 Stamford | 505 |  |

## 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 14, 2026.

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Source: https://www.tamtam.ai/l/multinational-companies-stamford