These Japanese companies with in-house R&D are primarily large, established firms, many founded in the early to mid-20th century. The list includes major players in manufacturing, such as Sumitomo Electric, a diversified manufacturer, and Toyota Motor Corporation, a global automotive leader. Other notable companies are NTT DATA, a global IT services provider, and Takeda, a pharmaceutical manufacturer. Many of these companies are headquartered in Tokyo, reflecting a concentration of corporate activity in the capital.
The companies demonstrate a mix of sectors, with a strong presence in manufacturing and IT services. Motor vehicle manufacturing is well-represented by companies like Nissan Motor Corporation and Honda, while electronics and appliances are covered by Panasonic and Sony. The presence of UNIQLO indicates a significant retail presence with an R&D focus, suggesting a broad application of research and development across various industries in Japan.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
SUMITOMO ELECTRIC INTERCON'T PROD (M) SBsumitomoelectric.com
A global network of 414 companies in 40 countries, originally focused on copper wire production, now diversified into automotive, infocommunications, electronics, environment, energy, and industrial materials |
289,000 | |||
| 2 |
NTT DATA, Inc.global.ntt
A global IT services provider offering a wide range of business and technology solutions as it transitions to NTT DATA |
140,000 | |||
| 3 |
Komatsukomatsu.jp
Innovating manufacturing and technology to create value for a sustainable future where people, businesses, and the planet flourish together |
60,000 | |||
| 4 |
NTT DATAnttdata.com
Providing IT and business consulting, digital transformation, managed services, and industry solutions to clients worldwide for long-term success. |
48,385 | |||
| 5 |
Nissan Motor Corporationnissan-global.com
A global car manufacturer offering a range of vehicles under the Nissan and INFINITI brands, dedicated to sustainable mobility Follow on social media for updates |
47,419 | |||
| 6 |
Hitachihitachi.com
A technology and innovation company committed to creating a more sustainable society through advanced social infrastructure systems and improving quality of life |
40,513 | |||
| 7 |
Toyota Motor Corporationglobal.toyota
Global automotive industry leader manufacturing vehicles in twenty-seven countries and marketing products across over one hundred seventy regions with hundreds of thousands employees. |
38,930 | |||
| 8 |
Takedatakeda.com
The company is committed to transforming lives by advancing science, focusing on patient needs, and setting new standards in healthcare |
37,267 | |||
| 9 |
Kao EMEA & Americaskao.com
Leading manufacturer of hygiene, beauty, and health products with premium brands in consumer care, salon, cosmetics, and luxury skincare sectors. |
34,000 | |||
| 10 |
Japan Tobacco Inc. (JT)jt.com
A global company in tobacco, pharmaceutical, and processed food sectors, focusing on sustainability and stakeholder value through innovation and responsible products |
33,449 | |||
| 11 |
Panasonicholdings.panasonic
A company committed to enhancing well-being and society through sustainable solutions, offering superior products and services to help people live their best |
30,689 | |||
| 12 |
Hondaglobal.honda
A global leader in mobility solutions, specializing in automobiles, motorcycles, power products, and aircraft manufacturing |
25,208 | |||
| 13 | 24,935 | ||||
| 14 |
UNIQLOfastretailing.com
A leading Japanese retail holding company offering high-quality, innovative apparel under the concept of LifeWear in over 25 markets worldwide |
19,984 | |||
| 15 |
Marellimarelli.com
A global supplier to the automotive sector focused on innovation, manufacturing excellence, and creating a safer, greener, and better-connected world |
18,637 | |||
| 16 |
NEC Corporationnec.com
An industry leader in IT and network integration, focusing on sustainable solutions for safety, security, and efficiency in a rapidly changing world |
17,980 | |||
| 17 |
Mitsubishi Heavy Industriesmhi.com
Delivers innovative integrated solutions across power, energy, machinery, infrastructure, aerospace, and defense, advancing lives and environmental sustainability globally. |
15,162 | |||
| 18 |
Olympus Corporationolympus-global.com
A global company dedicated to developing medical solutions to improve lives by detecting, preventing, and treating diseases while ensuring public safety |
13,679 | |||
| 19 | 13,086 | ||||
| 20 |
Yamaha Corporationyamaha.com
Manufacturer and provider of musical instruments, sound-related products, and services focused on enriching lives through music and culture. |
13,023 | |||
| 21 |
Astellas Pharmaastellas.com
Development and provision of innovative therapies in oncology, ophthalmology, urology, immunology, and women's health addressing unmet medical needs. |
12,472 | |||
| 22 |
Renesas Electronicsrenesas.com
It provides embedded semiconductor solutions for automotive, industrial, infrastructure, and IoT industries, focusing on quality and user experience. |
11,993 | |||
| 23 |
Nidec Corporation Globalnidec.com
Designing, producing, and marketing electric motors and their associated components and parts are core activities across various industries including automotive, home appliances, and industrial equipment. |
11,960 | |||
| 24 |
Rakutenrakuten.com
A global ecommerce company offering a wide range of consumer and business services, expanding worldwide and focused on creating a better future |
11,289 | |||
| 25 |
Astemo Ltd.astemo.com
Development and supply of automotive powertrain, chassis, AD/ADAS, and motorcycle systems focusing on safety, efficiency, and environmental sustainability. |
10,781 | |||
| 26 | 10,685 | ||||
| 27 |
Suntory Holdings Limitedsuntory.com
A global consumer products company offering a diverse portfolio of beverages, wellness products, and operating a flower business, committed to social responsibility and growth |
10,535 | |||
| 28 |
Asahi Kaseiasahi-kasei.com
Global company providing healthcare products, residential solutions, and advanced materials to improve life quality and support sustainable development worldwide. |
10,369 | |||
| 29 |
Shiseidoshiseido.com
A top cosmetics company with international brands in 120 countries, offering beauty solutions for a sustainable society through innovative products and new lifestyle creations |
8,698 | |||
| 30 |
Yokogawayokogawa.com
Provides measurement, control, information solutions across diverse industries; optimizes production, assets, supply chains with digital technologies; enables autonomous operations. |
8,675 | |||
| 31 |
TrendAItrendmicro.com
Global cybersecurity company providing AI-powered protection and risk management for enterprises, governments, and consumers across diverse digital environments. |
8,060 | |||
| 32 |
Muratamurata.com
Global leader in designing, manufacturing, and supplying advanced electronic components and modules for diverse devices and industries worldwide. |
7,404 | |||
| 33 |
KEYENCE CORPORATIONkeyence.com
Development and manufacturing of factory automation equipment including sensors, measuring instruments, vision systems, laser markers, and digital microscopes worldwide. |
6,685 | |||
| 34 |
Canon Inc.global.canon
Manufacturing and marketing of imaging equipment, printers, cameras, medical systems, and semiconductor manufacturing equipment with global presence and R&D. |
6,597 | |||
| 35 |
NTTglobal.ntt
Global technology company offering mobile, infrastructure, consulting, and cloud services with deep industry expertise, serving Fortune Global 100 companies and millions of clients worldwide |
6,355 | |||
| 36 | 6,334 | ||||
| 37 |
Tokyo Electrontel.com
A leading semiconductor manufacturing equipment company providing high-performance products and services worldwide, focusing on customer satisfaction, innovation, and technology advancement |
6,269 | |||
| 38 |
Hitachi Construction Machineryhitachicm.com
Global construction machinery company prioritizing environmentally friendly activities, providing solutions for construction and mining needs, promoting sustainability and social development |
5,800 | |||
| 39 | 4,786 | ||||
| 40 | 4,624 | ||||
| 41 |
SoftBanksoftbank.jp
Innovative company utilizing AI, IoT, and robotics to drive the Information Revolution, expanding business domains with a focus on societal impact and workstyle reform |
4,471 | |||
| 42 |
ASICScorp.asics.com
A global company founded on the philosophy of promoting physical and mental wellbeing through sports footwear, apparel, and equipment |
4,382 | |||
| 43 |
KYOCERA Globalglobal.kyocera.com
Development of fine ceramics, semiconductor components, electronic devices, AI, IoT systems, and document solutions addressing critical global issues. |
4,375 | |||
| 44 |
Mitsubishi Motors Corporationmitsubishi-motors.com
A global automotive company with 30,000+ employees, 30 production centers worldwide, selling vehicles in 140+ countries, focusing on fulfilling customer ambitions |
4,282 | |||
| 45 | 4,235 | ||||
| 46 |
Seiko Epson Corporationglobal.epson.com
Global technology leader focused on efficient, precise innovation in printing, manufacturing, and visual solutions Committed to sustainability and addressing societal issues |
4,220 | |||
| 47 |
Sysmex Corporationsysmex.co.jp
A global leader in in vitro diagnostics, dedicated to innovating personalized medicine and novel treatments to improve healthcare worldwide |
4,045 | |||
| 48 |
Kyoto Universitykyoto-u.ac.jp
Established in 1897, providing high-quality education and research with a focus on open-minded dialogue and academic freedom |
4,004 | |||
| 49 |
Chiyoda Corporationchiyodacorp.com
Global engineering company focused on energy and environment, aiming to be top-tier provider through innovative solutions and sustainable growth strategies |
3,984 | |||
| 50 |
Advantestadvantest.com
Leading manufacturer of automatic test and measurement equipment for semiconductor design and production, serving applications such as 5G, IoT, AI, and more globally |
3,901 | |||
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. | |||||
| 51 |
HORIBAhoriba.com
The company provides instruments and systems for various industries including automotive, medical diagnostics, semiconductor manufacturing, and scientific research with proven quality and performance |
3,531 | |||
| 52 |
Toray Industries, Inc.toray.com
Development of fibers, textiles, performance chemicals, carbon fiber composites, environment engineering, pharmaceuticals, and medical products using advanced chemical technologies worldwide. |
3,225 | |||
| 53 |
Rakuten Symphonyrakuten.com
Global B2B services provider in mobile telco industry, offering cloud-based international mobile services and innovative telco platform, with operations in 30 countries |
3,102 | |||
| 54 |
Fast Retailingfastretailing.com
Global apparel retail company operating multiple brands, designing and selling innovative clothing with a focus on quality, simplicity, and longevity. |
3,062 | |||
| 55 |
Toyo Engineering Corporationtoyo-eng.com
Engineering globally to construct plants, focusing on quality, safety, environment, and cost Creating sustainable solutions for energy infrastructure with innovation |
3,002 | |||
| 56 |
Kuraraykuraray.com
A global specialty chemical company, focusing on fibers, resins, chemicals, and other products for various industries, committed to innovation and addressing social issues |
2,833 | |||
| 57 |
Recruit Co.,Ltd.recruit.co.jp
Global managing affiliate company overseeing Recruit Group's strategy, globalization, R&D for business technology, and leadership development across 28 countries |
2,723 | |||
| 58 |
Mitsui Chemicals Groupmitsuichemicals.com
A multinational chemical company, listed on the Tokyo Stock Exchange, that develops environmentally friendly materials for various industries globally |
2,715 | |||
| 59 |
Kubota Corporationkubota.com
Manufacture and sale of farm equipment, construction machinery, water treatment systems, pipes, pumps, and environmental engineering services globally. |
2,639 | |||
| 60 |
PHC Holdings Corporationphchd.com
Global healthcare company specializing in diabetes management, healthcare solutions, life sciences, and diagnostics with a mission to improve lives worldwide |
2,610 | |||
| 61 |
Kyowa Kirin Co., Ltd.kyowakirin.com
Development of novel medicines, next-generation antibodies, and cell and gene therapies targeting severe and rare diseases globally. |
2,582 | |||
| 62 |
Panasonic Connectconnect.panasonic.com
A company dedicated to providing innovative B2B solutions, driving sustainability and societal advancement by connecting with customers to solve challenges and create value |
2,476 | |||
| 63 |
Woven by Toyota
Innovative global culture combining Silicon Valley innovation with Japanese quality craftsmanship to create safe and intelligent mobility experiences for customers worldwide |
2,464 | |||
| 64 |
The University of Osakaosaka-u.ac.jp
A prestigious research university in Osaka, Japan, founded in 1931, offering a wide range of undergraduate and graduate programs and research facilities |
2,415 | |||
| 65 | 2,380 | ||||
| 66 |
KONICA MINOLTA, INC.konicaminolta.us
Development manufacturing sales multifunctional peripherals printers healthcare systems measuring instruments electronic materials optical products functional films |
2,344 | |||
| 67 |
Tohoku Universitytohoku.ac.jp
A research university focused on developing new technologies to make the world safer, more environmentally friendly, and improve quality of life |
2,298 | |||
| 68 |
Sharpglobal.sharp
A company in Japan manufacturing and selling telecommunications equipment, electronics, and components, committed to innovation, employee growth, and customer prosperity through sincerity and creativity |
2,207 | |||
| 69 |
Toshiba Corporationglobal.toshiba
A global technology company specializing in energy, social infrastructure, electronic devices, and digital solutions, committed to creating a sustainable future |
2,021 | |||
| 70 |
Daifukudaifuku.com
Provider of comprehensive material handling solutions to enhance global competitiveness, addressing logistics challenges with technology and expertise across various industries worldwide |
1,932 | |||
| 71 |
Daimler Truck Asiaasia.daimlertruck.com
A company developing mobility solutions for a better life and planet, combining strengths to provide value products globally while focusing on sustainability |
1,907 | |||
| 72 |
Mitsubishi Chemical Groupmcgc.com
Leading innovative solutions in mobility, digital, medical, and food sectors to enhance well-being of people and the planet. |
1,904 | |||
| 73 |
Teijin Limitedteijin.com
Innovative global group specializing in materials, healthcare, and IT solutions, focused on environmental value, safety, and health consciousness |
1,882 | |||
| 74 |
Aernnova Aerospaceaernnova.com
A leading Aerostructures company specializing in design, manufacturing, and support for Empennages, Wings, and Rear Fuselages Offers full product lifecycle management |
1,880 | |||
| 75 |
ALPS ALPINEalpsalpine.com
A global manufacturer of electronic components and automotive infotainment systems, supplying a wide range of products and solutions worldwide |
1,879 | |||
| 76 |
AESCaesc-group.com
A global leader in high-performance battery development and manufacturing for electric vehicles and energy storage systems, driving the transition to clean energy solutions |
1,862 | |||
| 77 |
SHIMADZU CORPORATIONshimadzu.com
Providing world-class analytical instruments, medical imaging systems, aircraft equipment, and industrial machinery for health, safety, and industry advancement. |
1,858 | |||
| 78 |
Santensanten.com
This specialized company in ophthalmology conducts research, development, marketing, and sales of pharmaceuticals, over-the-counter products, and medical devices worldwide |
1,848 | |||
| 79 |
Daiichi Sankyo Japandaiichisankyo.com
An innovative global healthcare company with over 120 years of experience, focusing on discovering and delivering new standards of care for cancer, cardiovascular, and other diseases |
1,811 | |||
| 80 |
Mercari, Inc.careers.mercari.com
A C2C marketplace app allowing easy buying and selling of items with affordable shipping options, user-friendly experience, and additional services |
1,791 | |||
| 81 |
Hitachi Automotive Systemshitachi-automotive.co.jp
Development and supply of powertrain, chassis, and ADAS technologies integrating IoT, AI, and connectivity for sustainable mobility solutions. |
1,761 | |||
| 82 |
Kurita Groupkurita.co.jp
A global leader in water treatment solutions, offering chemicals, facilities, and services worldwide to create new value for customers and society |
1,754 | |||
| 83 |
TOPPAN Groupholdings.toppan.com
Global provider delivering sustainable solutions in printing, communications, security, packaging, electronics, and digital transformation, with expertise to address diverse business challenges |
1,744 | |||
| 84 |
FURUKAWA AUTOMOTIVE SYSTEMS INC.furukawaas.co.jp
An automotive organization headquartered in Osaka, Japan, specializing in automotive systems |
1,741 | |||
| 85 |
Anritsuanritsu.com
A pioneer in communications equipment since 1895, offering test tools, quality assurance equipment, environmental measurement, and sensing devices |
1,733 | |||
| 86 |
Fujifilm Groupholdings.fujifilm.com
A holding company overseeing FUJIFILM Group's diverse businesses, adapting to digitalization by expanding into multiple growth fields beyond traditional photography materials |
1,715 | |||
| 87 |
Resonacresonac.com
This company specializes in cutting-edge functional materials technologies and aims to co-create a better society through innovative solutions in the chemical industry |
1,691 | |||
| 88 |
NHK, Japan Broadcasting Corporationnhk.or.jp
This company is Japan's public broadcaster, providing radio and television services independently funded by receiving fees from households with television sets |
1,684 | |||
| 89 |
Fujikura Ltd.fujikura.co.jp
Aiming for customer appreciation, Fujikura Group delivers reliable wires, cables, and products in telecommunications, energy, electronics, and automotive sectors |
1,657 | |||
| 90 |
Sumitomo Chemicalsumitomo-chem.co.jp
A company originally addressing air pollution from copper smelting, now focuses on diverse businesses driven by technological innovation to benefit society |
1,636 | |||
| 91 |
Mitsubishi Powerpower.mhi.com
Designs, manufactures, and maintains equipment and systems for decarbonization and reliable power, including gas turbines, fuel cells, and air quality control systems, globally. |
1,635 | |||
| 92 |
Takasago International Corporationtakasago.com
A global leader in flavor, fragrance, and aroma ingredients, specializing in developing innovative products for food, beverage, and personal care industries worldwide |
1,626 | |||
| 93 |
Fuji Electric Co., Ltd.fujielectric.com
The company is dedicated to integrating power semiconductor and electronics technologies with IoT to create sustainable solutions for industrial and social infrastructure sectors |
1,598 | |||
| 94 |
UD Trucksudtrucks.com
A leading Japanese provider of commercial vehicle solutions, dedicated to innovation and providing dependable trucks and services worldwide for smart logistics |
1,582 | |||
| 95 |
SAKATA INX CORPORATIONinx.co.jp
Specializing in manufacturing printing inks and functional materials, we innovate with earth-friendly technology to enhance life with color and happiness |
1,567 | |||
| 96 |
Hokkaido Universityglobal.hokudai.ac.jp
A prestigious comprehensive university in Japan, focusing on research in natural sciences, social sciences, and humanities with diverse international programs and support |
1,564 | |||
| 97 |
Ajinomoto Co., Inc.ajinomoto.com
Global food and amino acid business, uses bioscience and fine chemical technologies to support healthy lives through sustainable solutions. |
1,523 | |||
| 98 |
Penta-Ocean Construction Company Limitedpenta-ocean.co.jp
A Japanese construction firm specializing in marine works and land reclamation, with offices in multiple countries and involvement in various major projects globally |
1,503 | |||
| 99 |
SEGAsega.co.jp
The company engages in planning, developing, and selling games for consoles, PCs, and smartphones, as well as arcade machines and character products |
1,487 | |||
| 100 |
Kajimakajima.com
General contractor specializing in high-rise, earthquake-resistant buildings, large civil engineering projects, real estate, and office automation equipment businesses. |
1,484 | |||
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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 largest companies in Japan 932
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