These large companies in Alabama conduct in-house research and development across diverse sectors. Key players include Johnson&Johnson, a healthcare giant producing life-changing breakthroughs; Honeywell Technologies, a global automation company; and Tesla Austria GmbH, focused on sustainable energy through electric vehicles. Also present are Sikorsky Aircraft Corporation, a global security and aerospace company, and General Dynamics UK, which produces business jets and submarines. Foxconn specializes in electronics manufacturing, AI, and semiconductors.
The list reveals a strong presence of established corporations, with many founded in the late 19th or early 20th century, such as Johnson&Johnson (1887), Dow (1897), and Carrier Corporation (1902). While some companies like Tesla Austria GmbH (2003) and HonorHealth (2013) are more recent, the overall composition points to a mature industrial base. Notably, several major players in healthcare and defense have R&D operations in Alabama, reflecting strategic investments in these critical industries.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Johnson&Johnsonjnj.com
Largest, most broadly based healthcare company, producing life-changing breakthroughs, creating digital health tools, 3-D printing artificial joints, and discovering lifesaving drugs. |
145,000 | |||
| 2 |
Honeywell Technologieshoneywell.com
a global automation company that provides services, solutions, and products for building, industrial, and process sectors, focusing on automation to autonomy. |
134,559 | |||
| 3 |
Tesla Austria GmbHtesla.com
A company focused on accelerating the world's transition to sustainable energy through electric vehicles and clean energy generation and storage solutions |
128,000 | |||
| 4 |
Sikorsky Aircraft Corporationlockheedmartin.com
Global security and aerospace company providing integrated solutions and predictive technologies to keep customers ahead of threats through advanced technology systems and services |
115,000 | |||
| 5 |
General Dynamics UKgd.com
A global company focusing on safety and security, producing a range of products from business jets to submarines with a culture of continuous improvement |
100,000 | |||
| 6 |
Foxconnfoxconn.com
Global electronics manufacturer specializing in hardware, software, AI, semiconductors, and emerging technologies with extensive R&D and sustainability focus. |
98,833 | |||
| 7 |
Carrier Corporationcarrier.com
Global provider of sustainable climate and energy solutions, enhancing comfort, safety, and efficiency in buildings and transportation worldwide. |
56,000 | |||
| 8 | 45,665 | ||||
| 9 |
PayPalpaypal.com
Enables fast, easy, enjoyable money movement for individuals and businesses globally, unlocking opportunities and empowering everyday financial interactions for millions. |
38,343 | |||
| 10 |
HonorHealthhonorhealth.com
Provides comprehensive healthcare services including acute-care hospitals, medical group, cancer care, surgery centers, research, education, and community services across Arizona. |
30,000 | |||
| 11 |
Textrontextron.com
A multi-industry company offering innovative solutions and services in aircraft, defense, industrial, and finance sectors through a global network |
27,398 | |||
| 12 |
Vanderbilt University Medical Centervanderbilthealth.com
Leading academic medical center, excels in patient care, research, and education, solving complex medical problems through innovation and collaboration. Specialized care for various conditions, including transplants and pediatric cancer. |
21,888 | |||
| 13 |
Sun Chemical Corporationsunchemical.com
Leading producer of packaging, graphic, color, and display solutions for various industries, committed to sustainable development and exceeding customer expectations worldwide |
20,000 | |||
| 14 |
Tenaristenaris.com
A leading supplier of tubes and services for the energy industry and other industrial applications, with a global workforce committed to continuous improvement |
20,000 | |||
| 15 |
University of Alabama at Birminghamuab.edu
Educates students, conducts research, provides patient care, fosters innovation, and engages with the community, significantly impacting the state's economy. |
16,963 | |||
| 16 |
Cincinnati Children'scincinnatichildrens.org
Nonprofit academic medical center providing pediatric care from wellness visits to complex conditions while conducting research and training hundreds of medical residents. |
16,493 | |||
| 17 |
U.S. Environmental Protection Agency- Pacific Southwestepa.gov
It protects human health and the environment by ensuring clean air, land, and water while enforcing federal environmental laws effectively. |
16,000 | |||
| 18 |
Brigham and Women's Hospitalbrighamandwomens.org
A world-renowned hospital in Boston affiliated with Harvard Medical School, providing exceptional patient care, groundbreaking research, and top-notch medical training programs |
15,440 | |||
| 19 |
Walmart Global Techtech.walmart.com
Utilizing technology to transform retail, empower associates, and create innovative experiences for customers and members worldwide across its brands. |
15,014 | |||
| 20 |
Westinghouse Electric Companywestinghousenuclear.com
Global leader in providing safe and innovative nuclear technology, offering reliable power plants, fuel, automation, and services with a focus on safety and sustainability |
12,786 | |||
| 21 | 12,282 | ||||
| 22 |
Auburn Universityauburn.edu
A comprehensive research institution offering diverse programs at undergraduate, graduate, and professional levels, known for academic excellence and economic impact on Alabama |
11,627 | |||
| 23 |
UCSF Healthucsfhealth.org
An integrated healthcare network with top-ranked hospitals, providing innovative patient care, advanced technology, pioneering research, and compassionate treatment across numerous specialties. |
11,588 | |||
| 24 |
University of California, Riversideucr.edu
Educates students, conducts research, and promotes social mobility. It is recognized for educational access and research excellence, with a focus on serving diverse communities. |
10,851 | |||
| 25 |
UChicago Medicineuchicagomedicine.org
Provides superior, compassionate healthcare, advancing medical innovation, serving community health needs, and furthering knowledge through an academic medical institution and regional network. |
7,940 | |||
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. | |||||
| 26 |
Tiger Analyticstigeranalytics.com
A global leader in AI and Analytics, offering fullstack services to Fortune 1000 companies across various industries to achieve real outcomes at scale |
7,353 | |||
| 27 |
Boise State Universityboisestate.edu
Focused on world change through unique 'Blue Turf Thinking' concept, fostering innovation and impact, not by chance. |
7,326 | |||
| 28 |
Ingredion Incorporatedingredion.com
A global provider of ingredient solutions for food, beverage, animal nutrition, and industrial markets, turning plant-based materials into value-added products through innovation |
6,517 | |||
| 29 |
Albany Medical Centeralbanymed.org
Provides high-level patient care, educates medical professionals, and conducts biomedical research, operating a large regional health system with a medical college and physician practice. |
6,190 | |||
| 30 |
Qorvo, Inc.qorvo.com
It supplies innovative semiconductor solutions across various sectors, including automotive, consumer, defense, and mobile, addressing complex technical challenges effectively. |
6,155 | |||
| 31 |
FlightSafety Internationalflightsafety.com
Gold standard for elite aviation training, innovative flight simulation devices, and ultra-high-definition visual systems, elevating safety across the industry. |
5,558 | |||
| 32 | 5,063 | ||||
| 33 |
TriNettrinet.com
A provider of full-service HR solutions tailored for small and medium-size businesses, offering expertise in human capital, benefits, compliance, payroll, and technology |
4,611 | |||
| 34 |
Hexagon Asset Lifecycle Intelligencehexagon.com
Empowers customers to design, construct, and operate industrial facilities through data unlocking, digital maturity acceleration, and productivity tools for safer, sustainable global operations. |
4,446 | |||
| 35 |
ARRISEarrise.com
International services group supporting leading technology companies with a global team of over 7,000 experienced professionals across multiple industries. |
4,375 | |||
| 36 |
Jane Streetjanestreet.com
Firm engages in quantitative trading globally, focusing on complex problem-solving, system development, and theoretical testing in an open, informal, intellectual, and fun environment. |
3,881 | |||
| 37 |
Cruise - Universitygm.com
Designs, manufactures, and markets self-driving electric vehicles, focusing on advancing autonomous technology for future transportation solutions. |
3,800 | |||
| 38 |
G-III Apparel Groupgiii.com
Design sourcing manufacturing distribution marketing of fashion apparel with a portfolio of over 30 licensed and owned global brands. |
3,598 | |||
| 39 |
The University of Alabama in Huntsvilleuah.edu
Public university offering accredited undergraduate and graduate degree programs across diverse fields including engineering, science, business, nursing, and humanities. |
3,520 | |||
| 40 |
University of South Alabamasouthalabama.edu
A global research and teaching university offering quality education in various fields, small class sizes, hands-on research opportunities, state-of-the-art facilities, and Division I athletic teams |
3,384 | |||
| 41 | 2,682 | ||||
| 42 |
NASA Ames Research Centernasa.gov
A leading research center in Silicon Valley conducting cutting-edge research in aeronautics, exploration technology, and science for over 75 years |
2,679 | |||
| 43 |
Specialized Bicycle Componentsspecialized.com
Design and manufacture innovative bicycles and gear for riders of all levels, focusing on performance and rider needs since 1974. |
2,524 | |||
| 44 |
Adtranadtran.com
Innovative solutions for telecommunication service providers to deliver voice, data, and video services, aiming to connect everyone, everywhere in a fully connected world |
2,438 | |||
| 45 |
Daktronicsdaktronics.com
Develops LED video and messaging display solutions, a standard in the industry with reliable quality and a laser focus on customer challenges. |
2,211 | |||
| 46 |
Mitsubishi Power Americaspower.mhi.com
Designing, manufacturing, and servicing power generation and energy storage solutions, including gas turbines, solar, geothermal, and green hydrogen systems, with a focus on carbon reduction. |
2,121 | |||
| 47 |
Jump Tradingjumptrading.com
Trading firm active across asset classes and time zones. They build systems that move global markets with AI and machine learning at the core. |
2,111 | |||
| 48 |
RealTruck, Inc.realtruck.com
Manufacturer and digital destination for accessories tailored to truck, Jeep, Bronco, and off-road vehicles. They offer an extensive product portfolio. |
2,108 | |||
| 49 |
Cardinal Glass Industriescardinalcorp.com
Leading manufacturer specializing in residential glass products for windows and doors, focusing on innovation and quality in the industry. |
1,995 | |||
| 50 |
Altium Packagingaltiumpkg.com
Leader in customer-centric packaging solutions with a network of plants in the US and Canada offering innovative products and exceptional service for over 100 years |
1,972 | |||
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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.
More company lists in Alabama
- The largest companies in Alabama 2,140
- Multinational companies in Alabama 416
- Manufacturers in Alabama 221
- Financial services firms in Alabama 209
- Retail chains in Alabama 192
- Critical infrastructure operators in Alabama 186
- Education providers in Alabama 173
- Hardware manufacturers in Alabama 156
- Companies with a mobile app in Alabama 156
- SaaS companies in Alabama 147
- Professional services firms in Alabama 135
- Financial Services companies in Alabama 131
- Software Development companies in Alabama 130
- Healthcare providers in Alabama 124
- Public sector organisations in Alabama 119
- AI companies in Alabama 111
- Hospitals and Health Care companies in Alabama 109
- Aerospace and defence companies in Alabama 104
- Subscription businesses in Alabama 104
- IT Services and IT Consulting companies in Alabama 98
- IT services companies in Alabama 90
- Higher Education companies in Alabama 89
- Corporate groups and holding companies in Alabama 89
- Publicly traded companies in Alabama 85
The same list elsewhere in United States
- Companies with in-house R&D in the United States 6,796
- Companies with in-house R&D in California 1,276
- Companies with in-house R&D in Texas 442
- Companies with in-house R&D in New York State 419
- Companies with in-house R&D in Massachusetts 396
- Companies with in-house R&D in Illinois 322
- Companies with in-house R&D in Michigan 287
- Companies with in-house R&D in Ohio 277
- Companies with in-house R&D in Pennsylvania 255
- Companies with in-house R&D in New Jersey 224
- Companies with in-house R&D in Florida 221
- Companies with in-house R&D in Georgia 173
- Companies with in-house R&D in Virginia 166
- Companies with in-house R&D in North Carolina 158
- Companies with in-house R&D in Wisconsin 154
- Companies with in-house R&D in Minnesota 146
- Companies with in-house R&D in Washington State 140
- Companies with in-house R&D in Colorado 113
- Companies with in-house R&D in Maryland 107
- Companies with in-house R&D in Indiana 104
- Companies with in-house R&D in New York 223
- Companies with in-house R&D in San Francisco 147
- Companies with in-house R&D in Houston 129
- Companies with in-house R&D in San Jose 103