| # | Company | Employees |
|---|---|---|
| 1 |
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 |
| 2 |
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 |
| 3 |
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 |
| 4 |
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 |
| 5 |
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 |
| 6 |
Teijin Limitedteijin.com
Innovative global group specializing in materials, healthcare, and IT solutions, focused on environmental value, safety, and health consciousness |
1,882 |
| 7 |
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 |
| 8 |
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 |
| 9 |
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 |
| 10 |
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 |
| 11 |
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 |
| 12 |
Nagase & Co., Ltd.nagase.com
A company with nearly 200 years of expertise in various industries helping partners identify, develop, and expand new business opportunities through innovative solutions |
1,175 |
| 13 |
Nitto Denko Corporationnitto.com
Development and supply of diverse products for electronics, automobiles, housing, infrastructure, environment, and medical fields worldwide with innovation focus. |
1,174 |
| 14 |
DIC Corporationdic-global.com
Established in 1908, the company specializes in manufacturing printing inks, organic pigments, and synthetic resins, offering solutions for various industries worldwide |
831 |
| 15 |
NIPPON SHOKUBAIshokubai.co.jp
A global chemical company since 1941, specializing in unique catalyst technology and supplying products like ethylene oxide, acrylic acid, and superabsorbent polymer |
715 |
| 16 |
Mitsubishi Chemical Corporationm-chemical.co.jp
Specializing in performance products, industrial materials, and a range of other offerings to meet various market needs |
588 |
| 17 |
artience group (former Toyo Ink Group)artiencegroup.com
A Japan-based innovator providing diverse fine chemical products globally, using core technologies in coatings, dispersions, polymers, and color materials |
460 |
| 18 |
JSR Corporationjsr.co.jp
Development and supply of innovative chemical materials aimed at creating new value and contributing to societal advancement and future generations. |
376 |
| 19 |
UBE Corporationube.com
Manufacturing technologies delivering safe, environmentally friendly chemical products addressing global environmental issues and contributing to health and enriched society. |
346 |
| 20 |
住友化学(株)sumitomo-chem.co.jp
A chemicals company based in Tokyo, Japan, specializing in the manufacture and distribution of various chemical products |
337 |
| 21 |
SEKISUI S-LECs-lecfilm.com
A global leader in PVB interlayer technology for laminated glass, providing solutions for safety, security, design, UV blocking, sound acoustic, and more |
269 |
| 22 |
The Yokohama Rubber Co., Ltd.y-yokohama.com
Manufactures and sells a wide range of tires, rubber products, conveyor belts, marine equipment, and other products for various industries |
216 |
| 23 |
Tosoh Corporationtosoh.com
Global chemical company supplying specialty and commodity chemicals to industries including automotive, electronics, bioscience, construction, and environmental sectors. |
188 |
| 24 |
Nippon Sanso Holdings Corporationjp.nipponsanso.com
A global supplier of industrial, electronic, and medical gases with innovative solutions for increased productivity, human well-being, and sustainability |
169 |
| 25 |
SUMITOMO RIKO COMPANY LIMITEDsumitomoriko.co.jp
A global manufacturer of rubber and synthetic resin products with a focus on automotive anti-vibration, IT, infrastructure, and construction/housing applications |
159 |
| 26 |
Air Water Inc.awi.co.jp
A diverse conglomerate offering valuable products and solutions in industrial gas, chemicals, medical, energy, agriculture, food products, logistics, and more |
157 |
| 27 |
TORAY INTERNATIONAL,INC.toray-intl.co.jp
Global manufacturer's trading entity with diverse product and service offerings, leveraging expertise and experience in international trading across 22 countries and regions |
156 |
| 28 |
Denka Company Limiteddenka.co.jp
Production and distribution of diverse chemical products including inorganic, organic, electronic materials, and processed resins using proprietary technologies. |
152 |
| 29 |
Yamauchi Corpyamauchi.co.jp
Global company specializing in processing polymer materials like rubber and resins using original technologies to meet the needs of leading manufacturers worldwide |
150 |
| 30 |
TCI - Tokyo Chemical Industrytcichemicals.com
Supplier of organic laboratory chemicals, pharmaceutical, cosmetic, and functional materials with 70+ years of experience Offers 30,000+ products and custom synthesis services globally |
149 |
| 31 | 146 |
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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 Oct 9, 2026.
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