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The 25 largest Technology, Information and Internet companies in Japan

Tamtam tracks 25 Technology, Information and Internet companies headquartered in Japan. This list ranks all of them by number of employees on LinkedIn, led by AnyMind Group, CyberAgent, Inc. and Amazon Japan. Their median headcount is 202. Half of them were founded in 2009 or later. The most common headquarters are Tokyo (5).

🇯🇵 Japan25 companiesUpdated Oct 9, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
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

 Technology, Information and Internet 🇯🇵 Tokyo 9,204 2016
2
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

 Technology, Information and Internet 🇯🇵 Shibuya 1,839 1998
3
Amazon Japanamazon.co.jp

A global e-commerce company founded by Jeff Bezos, continually expanding product offerings and services to create a marketplace of endless possibilities

 Technology, Information and Internet 🇯🇵 Tokyo 1,350 n/a
4
BizReach, Inc.bizreach.co.jp

An internet services provider supporting the future of work by connecting talents with companies through various platforms and services

 Technology, Information and Internet 🇯🇵 Shibuya-ku 1,179 2009
5
Money Forward, Inc.corp.moneyforward.com

Empowering individuals to see money positively, broaden opportunities, and enrich lives for a better society

 Technology, Information and Internet 🇯🇵 Minato 1,151 2012
6
DMM.com Groupdmm.com

A diverse Group founded in 1998, providing video streaming, FX, Eikaiwa, Games, solar energy, 3D printers, and more to 29 million members Also involved in aquarium and football club business development

 Technology, Information and Internet 🇯🇵 Roppongi 874 1998
7
i-PROi-pro.com

The company provides customizable, high-quality camera systems for mission-critical applications, incorporating AI technology for predictive video analysis and tailored solutions

 Technology, Information and Internet 🇯🇵 Tokyo 525 2019
8
FLUXflux.jp

The company offers AI-powered solutions that boost clients' online sales and reduce expenses from technology utilization

 Technology, Information and Internet 🇯🇵 Minato 450 2018
9
株式会社ビズリーチbizreach.co.jp

The company operates various internet services supporting the future of work, connecting talented individuals with companies through job-matching platforms and HR Tech solutions

 Technology, Information and Internet 🇯🇵 421 n/a
10
LayerXlayerx.co.jp

The company's mission is to digitize all economic activities and operates businesses in banking, fintech, AI, and LLM

 Technology, Information and Internet 🇯🇵 333 2018
11
INTAGE Inc.intage.co.jp

An internet company located in Tokyo, Japan, specializing in various online services and solutions

 Technology, Information and Internet 🇯🇵 Chiyoda 313 2013
12
Dwango corpdwango.co.jp

A platform for sharing videos and live streaming, offering a wide range of content including music, anime, gaming, and entertainment

 Technology, Information and Internet 🇯🇵 Chuo 223 1997
13
Bengo4.com,Inc.bengo4.com

The company provides a variety of legal services through portals like law, tax, and business lawyer sites, as well as a digital contract management platform

 Technology, Information and Internet 🇯🇵 Minato 202 2005
14
D2Cd2c.co.jp

Specializing in mobile advertising since 2000 with a focus on developing apps, digital content, and mobile marketing services worldwide Promotes mobile ecosystem growth

 Technology, Information and Internet 🇯🇵 Minato-ku 171 2000
15
株式会社アイ・エム・ジェイimj.co.jp

Creating various strategies that match consumer and corporate needs by leveraging expertise and experience to reinvent the experience

 Technology, Information and Internet 🇯🇵 169 n/a
16
Supership Inc.supership.jp

A data technology company offering marketing solutions and data-driven customer experience enhancements, utilizing advertising technology and precise data utilization techniques

 Technology, Information and Internet 🇯🇵 Minato 162 2014
17
RAKSULcorp.raksul.com

A tech company innovating B2B platforms for various industries globally, aiming to improve systems and inspire positive change worldwide

 Technology, Information and Internet 🇯🇵 Tokyo 162 2009
18
KAYAC Inc.kayac.com

A Kamakura-based company specializing in original web services and web development, particularly in the anime, manga, and otaku fields Known for award-winning projects

 Technology, Information and Internet 🇯🇵 159 1998
19
Ex-NIFTYnifty.com

Since 1987, this company has been providing services that connect people and information through a network, facilitating communication and sharing

 Technology, Information and Internet 🇯🇵 Shinjuku 151 1987
20
GMO Pepabo, Inc.pepabo.com

A web hosting service company offering consumer domain registration, web hosting, ecommerce solutions, and internet community communication services since 2003

 Technology, Information and Internet 🇯🇵 Shibuya 148 2003
21
Alphaus Inc.alphaus.cloud

A tech startup offering cloud financial management tools to analyze, allocate, and optimize cloud spend for enterprises across AWS, Azure, and Google Cloud

 Technology, Information and Internet 🇯🇵 Tokyo 53 2015
22
Hatena.Co.Ltdne.jp

A leading web service provider in Japan with popular blogging and social bookmarking services, along with a global community platform

 Technology, Information and Internet 🇯🇵 Nakagyo-ku 49 2001
23
Mynet Inc.mynet.co.jp

The company provides smartphone app services, focusing on combining internet communication and gaming to enhance real-life interactions and enrich people's lives

 Technology, Information and Internet 🇯🇵 Tokyo 46 2006
24
株式会社アイディスaidis.co.jp

The company specializes in planning, developing, and operating games with a vision to inspire the world with the power of gaming

 Technology, Information and Internet 🇯🇵 Shibuya 14 2016
25
Xtra, Inc.xtra.global

The company offers crowdsourcing services connecting corporate clients with freelancers, as well as AI-powered machine translation services for optimized operations

 Technology, Information and Internet 🇯🇵 Chiyoda-ku 11 2007

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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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