This selection of multinational companies in Pittsburgh shows a concentration of large corporations across diverse sectors. Key players include PNC, a financial services provider, and UPMC, a major healthcare provider and insurer. PPG specializes in paints and coatings, while Wabtec Corporation supplies equipment for freight rail and transit. Retail is represented by American Eagle Outfitters Inc. and GNC, a health and wellness innovator. Viatris is a global healthcare company, and Alcoa is a leader in bauxite, alumina, and aluminum products.
The companies listed exhibit a mix of established industrial giants and modern service providers. Many are headquartered in Pittsburgh, indicating the city's role as a corporate hub. The industries range from traditional manufacturing and mining to advanced technology and global financial and legal services, reflecting a diversified economic landscape.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 64,159 | ||||
| 2 | 41,860 | ||||
| 3 | 33,277 | ||||
| 4 |
Wabtec Corporationwabteccorp.com
Provider of equipment, systems, digital solutions, and services for freight rail, transit, mining, industrial, and marine transportation sectors. |
27,000 | |||
| 5 |
American Eagle Outfitters Inc.aeo-inc.com
Global omni-channel retailer offering high-quality apparel, intimates, activewear, and personal care products through diverse brands focused on optimistic self-expression and social responsibility. |
22,832 | |||
| 6 |
Viatrisviatris.com
Global healthcare company providing extensive medicine portfolio and supply chain to deliver high-quality medicines addressing diverse health needs worldwide. |
17,886 | |||
| 7 | 17,780 | ||||
| 8 | 12,502 | ||||
| 9 | 10,422 | ||||
| 10 |
Howmet Aerospacehowmet.com
A global provider of advanced engineered solutions for aerospace and transportation industries, specializing in jet engine components, aerospace fastening systems, and titanium structural parts |
7,402 | |||
| 11 |
Kennametalkennametal.com
A global industrial technology leader specializing in advanced materials innovation, tooling, and wear-resistant solutions to enhance productivity for various industries |
6,659 | |||
| 12 |
K&L Gatesklgates.com
Global law firm providing expert legal counsel across corporate, regulatory, and litigation matters for diverse industries and public sector clients. |
4,682 | |||
| 13 |
Arconicarconic.com
A leading provider of aluminum products for automotive, aerospace, transportation, industrial, packaging, and construction markets, committed to innovation and advancement |
4,672 | |||
| 14 |
NEP Group, Inc.nepgroup.com
Worldwide live sports and entertainment production services using advanced technology and expert teams to deliver reliable, innovative media solutions for major events. |
4,569 | |||
| 15 |
Anixteranixter.com
A global provider of distribution, logistics, and supply chain solutions, offering electrical, communications, security, and safety services to businesses worldwide |
3,757 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
Excelitas Technologies Corp.excelitas.com
Provider of advanced photonic technologies specializing in sensing, detection, imaging, optics, and specialty illumination for diverse global industries. |
3,129 | |||
| 17 |
Matthews Internationalmatw.com
Global provider of precision industrial technologies and memorialization products, serving industries and funeral homes with innovative, efficient solutions. |
2,226 | |||
| 18 |
University of Pittsburgh School of Medicinemedschool.pitt.edu
Training physician leaders and scientists to improve health, advance research, promote equity, and collaborate internationally in medicine and education. |
2,199 | |||
| 19 |
Industrial Coatingsppg.com
Global provider of advanced coatings, paints, and specialty materials focused on protecting and enhancing industrial products and landmarks. |
1,830 | |||
| 20 |
Federated Hermesfederatedhermes.com
Global investment management firm providing equity, international, fixed income, alternative, and money market investment strategies since 1955. |
1,813 | |||
| 21 |
Inctureincture.com
A digital systems company delivering intelligent applications and services to enhance lives and address complex business challenges at scale using SAP technology |
1,159 | |||
| 22 |
TMS International LLCtmsinternational.com
A global leader in providing on-site steel mill services, focused on safety, innovation, environmental protection, and creating value for customers through expertise and unrivaled service |
1,146 | |||
| 23 | 1,118 | ||||
| 24 |
Koppers Inc.koppers.com
A global wood preservation technology company creating environmentally responsible solutions for various industries, with a focus on safety and sustainability |
1,080 | |||
| 25 |
Talogytalogy.com
Experts in talent management crafting solutions for screening, selecting, developing, and engaging talent worldwide using psychology and technology for data-driven decisions |
1,036 | |||
| 26 | 1,028 | ||||
| 27 |
Confluenceconfluence.com
provides technology solutions for investment management, offering products for performance, risk, data, regulatory, and investor reporting needs globally |
929 | |||
| 28 |
Liberty Tire Recycling, LLClibertytire.com
Reclaims over four billion pounds of scrap tires annually, transforming waste into sustainable products through a network of North American processing facilities. |
927 | |||
| 29 |
SMS group USAsms-group.com
A leader in providing new equipment, maintenance, and spare parts services for metals producers in North America and globally |
919 | |||
| 30 |
Caliber Technologiescaliberuniversal.com
Leading provider of integrated quality management platform solutions for regulated industries, specializing in Life Sciences and Pharmaceuticals, with a global presence |
885 | |||
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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 12, 2026.
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The same list elsewhere in United States
- Multinational companies in the United States 16,197
- Multinational companies in California 2,591
- Multinational companies in New York State 2,216
- Multinational companies in Texas 1,418
- Multinational companies in Florida 897
- Multinational companies in Illinois 831
- Multinational companies in Massachusetts 637
- Multinational companies in New Jersey 624
- Multinational companies in Georgia 521
- Multinational companies in Pennsylvania 472
- Multinational companies in Michigan 468
- Multinational companies in Alabama 418
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- Multinational companies in Ohio 390
- Multinational companies in North Carolina 358
- Multinational companies in Washington State 288
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- Multinational companies in New York 1,836
- Multinational companies in San Francisco 446
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- Multinational companies in Boston 241