（End of March, 2020）
Nippon Telegraph and Telephone Corporation(Holding Company)
For NTT Group as a whole, formulation of management strategies and promotion of basic research
Mobile Communications Business
Mobile communications business, smart life business, etc.
Mobile phone services, "d market" services such as movie and music distribution and e-book services, and finance and payment services
Regional Communications Business
Regional telecommunications operations in Japan and related businesses, etc.
FTTH and other services
Long Distance and International Communications Business
NTT Communications Corporation（Japan Operating Company）
NTT Ltd. (Global Operating company)
Long-distance telecommunications operations in Japan, international telecommunications business, solutions business, and related businesses
Cloud services, data center services, migration support services, and other services
NTT, Inc (Global holding company)
Governance, strategy planning, and policy promotion for the global business of NTT Group
Data Communications Business
NTT DATA Corporation
Network system services, system integration, etc., in Japan and overseas
ERP services, ICT outsourcing, and other services
NTT Urban Solutions, Inc.
NTT Anode Energy Corporation
Real estate, finance, construction / electric power, system development, advanced technology development, etc.
As one of the most innovative companies in IP and patent area. NTT received the award for 7th consecutive year
Established a council to promote secure digital economy together with multi-national companies
NTT is the first telecommunications operator to become a member of global initiatives to make smarter use of energy, “EP100” and “EV100” (Oct. 2018)
WEB media that thinks about the future with NTT
March 25, 2021
Ichiro meets R&D - NTT R&D Experiential Tour
March 14, 2021
Establishing Open Innovation Aimed at Developing Latin American Societies
March 13, 2021
To Spark Innovation, and Strengthen and Grow its Capabilities, We Unearth and Empower "Talent" All Over the World Through our Business