| # | Company | Employees |
|---|---|---|
| 1 |
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 |
| 2 |
AnyMind Groupanymindgroup.com
An end-to-end commerce enablement platform providing a wide range of tools for businesses, publishers, and influencers to drive next-generation commerce globally |
9,204 |
| 3 |
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 |
| 4 |
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 |
| 5 |
LINElycorp.co.jp
A leading messenger and life platform offering a wide range of services in chat messaging, entertainment, fintech, and lifestyles globally |
3,996 |
| 6 |
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 |
| 7 |
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 |
| 8 |
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 |
| 9 |
LY Corporationlycorp.co.jp
A leading tech organization in Japan offering diverse services such as search, e-commerce, communication, and advertising to create amazing user experiences |
2,420 |
| 10 |
Recruit Grouprecruit-holdings.com
This company connects individuals and businesses by offering a variety of choices in recruitment, HR services, and promotional media |
2,144 |
| 11 |
CyberAgent, Inc.cyberagent.co.jp
A pioneering internet company founded in 1998, focusing on media, internet advertising, games, and investment development to become the leading company of the 21st century |
1,839 |
| 12 |
freee.k.k.freee.co.jp
A leading provider of cloud-based accounting and HR software services in Japan, empowering SMBs to streamline operations and make data-driven decisions with ease |
1,757 |
| 13 |
Anritsuanritsu.com
A pioneer in communications equipment since 1895, offering test tools, quality assurance equipment, environmental measurement, and sensing devices |
1,733 |
| 14 | 
日本アイ・ビー・エム（株）ibm.com
A retail company based in Tokyo, Japan, specializing in providing various products and services to customers in the local area |
1,679 |
| 15 |
Mitsubishi Powerpower.mhi.com
Leading power solutions provider driving decarbonization through gas turbines, solid-oxide fuel cells, air quality control systems, and AI-enabled digital power plant solutions |
1,592 |
| 16 |
BizReach, Inc.bizreach.co.jp
An internet services provider supporting the future of work by connecting talents with companies through various platforms and services |
1,179 |
| 17 |
Money Forward, Inc.corp.moneyforward.com
Empowering individuals to see money positively, broaden opportunities, and enrich lives for a better society |
1,151 |
| 18 |
FPT Japanfptsoftware.com
Provider of technology and IT services in Japan, offering a proactive and friendly work environment to over 2600 skilled IT engineers and employees |
1,053 |
| 19 |
NICTnict.go.jp
The company promotes research and development in information and communications technology to advance Japan as a leading intellectual nation and contribute to society |
987 |
| 20 |
Sansan株式会社corp-sansan.com
A company providing cloud-based business card management services for corporations and individuals, transforming encounters into valuable assets and creating new opportunities |
897 |
| 21 |
RICOH Company Limitedricoh.com
A global provider of digital services and print solutions, Ricoh helps transform workplaces and optimize business performance, empowering individuals for a sustainable future |
889 |
| 22 |
SoftBank Group Corp.group.softbank
Global technology player driving the Information Revolution with a diverse portfolio of telecommunications, Internet services, AI, robotics, IoT, and clean energy technologies |
835 |
| 23 |
MC Digital｜エムシーデジタルmcdigital.jp
A technology company backed by Mitsubishi Corporation, specializing in digital transformation consulting, solutions, and AI SaaS to accelerate progress across industries |
649 |
| 24 |
Shinryo Corporationshinryo.com
Shinryo Corporation is a company that specializes in providing technology solutions and services Make sure to visit their official website for accurate information |
646 |
| 25 |
Works Applications Co., Ltd.worksap.co.jp
A company in Japan develops ERP software for financials and supply chain management, focusing on innovation with a next-generation solution AI WORKS |
622 |
| 26 | 450 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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 24, 2026.
More company lists in Japan
- The largest companies in Japan 881
- Manufacturers in Japan 115
- Publicly traded companies in Japan 113
- IT Services and IT Consulting companies in Japan 92
- Hardware manufacturers in Japan 73
- Higher Education companies in Japan 57
- Electronics and semiconductor companies in Japan 46
- Automotive manufacturers and suppliers in Japan 40
- Critical infrastructure operators in Japan 40
- Financial services firms in Japan 38
- Appliances, Electrical, and Electronics Manufacturing companies in Japan 38
- IT services companies in Japan 38
- Education providers in Japan 35
- SaaS companies in Japan 34
- Motor Vehicle Manufacturing companies in Japan 33
- Software Development companies in Japan 33
- Energy companies in Japan 32
- Research institutes in Japan 32
- Chemical Manufacturing companies in Japan 31
- Retail chains in Japan 29
- Consulting firms in Japan 28
- Business Consulting and Services companies in Japan 28
- Public sector organisations in Japan 27
- Technology, Information and Internet companies in Japan 25