This list features large and mid-sized companies with in-house R&D operations in Arizona, primarily focused on technology and manufacturing. Notable examples include Microchip Technology, a supplier of embedded control semiconductors; Align Technology, which develops clear aligners and intraoral scanners; Blue Yonder, providing AI-driven supply chain optimization solutions; and First Solar, specializing in advanced thin-film photovoltaic technology. The presence of these firms highlights a strong emphasis on semiconductor manufacturing, medical equipment, and renewable energy.
A significant pattern observed is the concentration of headquarters in the Phoenix metropolitan area, particularly in Chandler, Scottsdale, and Tempe. These cities host a diverse range of companies, from established players like Otis Elevator Co., which provides elevator and escalator solutions, to more recent firms like Resideo, a global leader in connected home solutions. This geographic clustering suggests a well-developed ecosystem supporting technological innovation and production in the region.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Otis Elevator Co.otis.com
The company specializes in providing innovative elevator, escalator, and moving walkway solutions to enhance urban mobility for over 160 years |
30,719 | |||
| 2 |
University of Arizonaarizona.edu
Leading public research university in the American Southwest, enriching communities with top-notch research, resources, and career-focused education Your investment in yourself |
21,024 | |||
| 3 |
Microchip Technology Inc.microchip.com
Supplier of smart, connected, secure embedded control semiconductors with development tools serving industrial, automotive, consumer, aerospace, defense, communications, computing markets. |
17,685 | |||
| 4 |
onsemionsemi.com
Development of intelligent power and sensing technologies focused on automotive, industrial automation, sustainable energy, and advanced communication infrastructure. |
15,509 | |||
| 5 |
Align Technologyaligntech.com
Develops and manufactures clear aligners, intraoral scanners, and software for dental professionals, improving smiles for patients worldwide. |
13,465 | |||
| 6 |
Blue Yonderblueyonder.com
Provides AI-driven solutions for optimizing supply chains, enhancing forecasting, inventory management, and logistics for retailers, manufacturers, and service providers. |
8,513 | |||
| 7 |
Amkor Technology, Inc.amkor.com
Leading provider of outsourced semiconductor packaging and test services, offering advanced packaging and system-in-package solutions for diverse applications. |
8,099 | |||
| 8 |
Northern Arizona Universitynau.edu
Public research university providing accessible, equitable postsecondary education through multiple campuses, online classes, and competency-based personalized learning programs. |
7,734 | |||
| 9 | 7,318 | ||||
| 10 |
Resideoresideo.com
A global leader providing integrated solutions for the connected home, offering comfort, safety, security, and home automation products and services |
7,126 | |||
| 11 |
First Solarfirstsolar.com
Leading American company specializing in advanced thin film photovoltaic technology, manufacturing high-performance solar modules for reliable power generation. |
6,686 | |||
| 12 | 5,633 | ||||
| 13 |
Honeywell Aerospaceaerospace.honeywell.com
Provides aerospace products, control systems, sensing, and security technologies to customers worldwide, focusing on innovation and manufacturing. |
5,473 | |||
| 14 |
VIAVI Solutionsviavisolutions.com
Provides network and service enablement technologies along with optical security products for mobile operators, governments, enterprises, and contractors. |
5,055 | |||
| 15 |
TPI Composites, Inc.tpicomposites.com
Leading manufacturer of composite wind blades for global wind turbine manufacturers, specializing in high-strength, lightweight, and durable products with advanced composite technology |
4,680 | |||
| 16 |
StandardAerostandardaero.com
Leading independent MRO provider in aerospace industry, offering extensive services and custom solutions for business, commercial, military, and industrial customers worldwide |
4,676 | |||
| 17 |
Gengendigital.com
Global company empowering Digital Freedom through trusted Cyber Safety brands Providing award-winning products in cybersecurity, online privacy, and identity protection worldwide |
3,564 | |||
| 18 |
Mars Petcare USmars.com
A global leader in pet nutrition and healthcare, with a wide portfolio of brands, veterinary services, and innovative technologies for pets and pet owners |
3,529 | |||
| 19 |
St. Joseph's Hospital and Medical Centerstjosephs-phx.org
A not-for-profit hospital in Phoenix offering quality medical care, research, education, and specialized services in neurology, cardiology, trauma, and more |
3,297 | |||
| 20 |
Fairchild - now part of ON Semiconductoronsemi.com
A pioneer in the semiconductor industry, focusing on energy-efficient innovations for mobile, industrial, automotive, and computing industries Partnered with ON Semiconductor |
2,598 | |||
| 21 |
Exosteamexos.com
A holistic health coaching company specializing in evidence-based programs for elite athletes, corporate employees, first responders, and military personnel worldwide |
2,324 | |||
| 22 |
Rogers Corporationrogerscorp.com
Global technology leader in specialty engineered materials, enabling high performance and reliability across EV/HEV, wireless infrastructure, automotive safety, and portable electronics. |
2,210 | |||
| 23 |
Vitalantvitalant.org
Leading nonprofit providing safe blood supply, laboratory services, transfusion medicine expertise, and research to hospitals and patients nationwide Relies on donations and volunteers |
1,961 | |||
| 24 | 1,657 | ||||
| 25 |
Confluent Medical Technologiesconfluentmedical.com
Applies materials science to MedTech innovation, specializing in design, development, and manufacturing of catheter-based devices and implants, including Nitinol, catheters, and polymer tubing. |
1,586 | |||
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 |
Universal Electronicsuei.com
Designs and manufactures wireless control and sensor technology for home entertainment, smart home devices, and HVAC systems integration. |
1,506 | |||
| 27 |
EMD Electronicsemdgroup.com
This company specializes in providing innovative materials and solutions for the electronics industry, enabling smaller, faster, and more energy-efficient devices |
1,373 | |||
| 28 |
University of Arizona College of Medicine - Phoenixphoenixmed.arizona.edu
The company inspires and trains individuals to become exemplary physicians, scientists, and leaders in health care through innovation and collaboration |
1,158 | |||
| 29 |
Ira A. Fulton Schools of Engineering at Arizona State Universityengineering.asu.edu
The company focuses on developing future engineers through problem-solving, entrepreneurship, and innovations to tackle societal challenges with multidisciplinary interactions |
1,138 | |||
| 30 |
Artesyn Embedded Powerartesyn.com
Designing, manufacturing reliable power conversion solutions for communications, computing, healthcare, industrial. Also offering AC-DC products, DC-DC converters, power factor correction bricks for various applications. |
1,116 | |||
| 31 |
University of Arizona College of Medicine โ Tucsonmedicine.arizona.edu
Advancing health and wellness through education, research, and patient care, the College of Medicine - Tucson is a leading medical school |
1,080 | |||
| 32 | 1,043 | ||||
| 33 |
JDA Softwareblueyonder.com
Provider of friction-free commerce solutions, formerly known as JDA Software, Inc Follow the new LinkedIn account for updates on future endeavors |
986 | |||
| 34 |
Barrow Neurological Institutebarrowneuro.org
Preserving and protecting thoughts, memories, dreams, personalities, and movement to prioritize what matters most |
918 | |||
| 35 |
Cognitecognite.com
A global SaaS leader driving digitalization in heavy-asset industries with innovative industrial software for sustainable, efficient operations through data transformation |
893 | |||
| 36 |
Hydac
Provider of hydraulic components and systems for various industries, including wind turbines, machine tools, agricultural machinery, excavators, aerospace, power plants, and solar energy plants |
862 | |||
| 37 |
Midwestern University (AZ)midwestern.edu
A leading healthcare education provider offering science programs with hands-on experience, clinical rotations, and a patient-centered approach to healthcare |
817 | |||
| 38 |
Local Motorshousegrail.com
Digital OEM specializing in micro-manufacturing, sales, service, and operations through local microfactories for a distributed production model |
762 | |||
| 39 |
ANI Pharmaceuticals, Inc.anipharmaceuticals.com
Develops, manufactures, and commercializes innovative, high-quality therapeutics, focusing on rare diseases, generics, and branded products, serving patients to improve lives. |
737 | |||
| 40 |
NortonLifeLockgendigital.com
Powers Digital Freedom through trusted Cyber Safety brands. Empowers safe, private, confident digital lives for nearly 500 million users worldwide. |
701 | |||
| 41 |
Pacific Scientific Energetic Materials Companypsemc.com
Specializing in pyrotechnic and energetic material devices, this company provides precise, safe, and reliable integrated systems for various industries worldwide |
684 | |||
| 42 |
TASER Internationalaxon.com
A leader in public safety technology, offering non-lethal weapons, body cameras, and evidence management solutions to law enforcement agencies worldwide |
657 | |||
| 43 |
Footprintfootprintus.com
Global materials science company creating plant-based fiber products to eliminate single-use plastics, leading to millions of pounds of plastic waste diverted from the environment |
641 | |||
| 44 |
Gowan Companygowanco.com
Provides agricultural solutions to farmers globally, improving crop health and productivity, contributing to global food security with a variety of products and services. |
603 | |||
| 45 |
Creative Testing Solutionsmycts.org
The company specializes in testing blood and plasma donations to ensure supply safety, impacting millions of lives each year through their work |
594 | |||
| 46 |
The CORE Institutethecoreinstitute.com
Leaders in orthopedic and neurosciences care, known for pioneering research, top-notch patient outcomes, state-of-the-art facilities, and a dedication to excellence in patient care |
594 | |||
| 47 |
Ventana Medical Systemsdiagnostics.roche.com
Innovates and manufactures instruments and reagents for cancer diagnostics and drug development research, specializing in automated tissue processing and slide staining |
565 | |||
| 48 |
SK Food Group Incskfoodgroup.com
SK Food Group produces a diverse range of food products, including Oven Pride Kitchen line, for retail outlets, convenience stores, transportation industry, and custom private label marketplace |
540 | |||
| 49 |
Compagnie Mauricienne de Textilecmt.mu
A global leader in jerseywear apparel industry with production hubs in multiple countries, specializing in fast-fashion products from design to delivery |
495 | |||
| 50 |
Isola Groupisola-group.com
Designing, developing, manufacturing, and marketing copper-clad laminates and dielectric prepregs to fabricate advanced multilayer printed circuit boards for various industries. |
423 | |||
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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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- The largest companies in Arizona 1,712
- Multinational companies in Arizona 208
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- Retail chains in Arizona 134
- Healthcare providers in Arizona 122
- Manufacturers in Arizona 113
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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 Alabama 214
- 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