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 Logo used since July 2025, incorporating the "Dynamic Loop" logomark used since 1985 | |
 Headquarters at Otemachi 1st Square inŌtemachi,Chiyoda, Tokyo | |
Native name | NTT株式会社 |
|---|---|
Romanized name | NTT kabushiki gaisha |
| Formerly | Nippon Telegraph and Telephone Corporation (1985–2025) |
| Company type | Public (Statutorykabushiki gaisha) |
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| Industry | Telecommunications |
| Predecessor | Nippon Telegraph and Telephone Public Corporation [ja] |
| Founded | 1 April 1985; 40 years ago (1985-04-01) |
| Founder | Government of Japan |
| Headquarters | Ōtemachi,Chiyoda,Tokyo, Japan |
Key people |
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| Products | |
| Revenue |  ¥11.94 trillion (2021)[1] |
| ¥1.67 trillion (2021)[1] | |
| ¥1.12 trillion (2021)[1] | |
| Total assets | ¥22.96 trillion (2021)[1] |
| Total equity |  ¥8.20 trillion (2021)[1] |
| Owner | Minister of Finance (34.25%)[2] |
Number of employees | 303,350 (2021)[1] |
| Parent | NTT Group [ja] |
| Subsidiaries | |
| Website | group global |
NTT, Inc.[a] (formerly known asNippon Telegraph and Telephone Corporation[b]) is a Japanesetelecommunications holding company headquartered inTokyo, Japan. Ranked 128th inFortune Global 500, NTT is thesixth largest telecommunications company in the world in terms ofrevenue,[3] as well as the 15th largest publicly traded company in Japan by market cap, and the 6th largest by revenue, as of November 2025.[4] In 2025, the company was ranked 79th in theForbes Global 2000.[5] NTT was the world'slargest company by market capitalization in the late 1980s, and remained among the world's top 10 largest companies by market capitalization until the burst of theDot-com bubble in the early 2000s.[6]
The company traces its origin to the national telegraph service established in 1868, which came under the purview of theMinistry of Communications in the 1880s as part of apostal, telegraph and telephone service. In 1952, the telegraph and telephone services were spun off as the government-ownedNippon Telegraph and Telephone Public Corporation[c]. Under Prime MinisterYasuhiro Nakasone, the company was privatised in 1985 along with theJapan Tobacco and Salt Public Corporation and subsequently theJapanese National Railways two years later, adopting the previous name until July 2025.[7] While NTT has been listed on theTokyo Stock Exchange since 1987, theJapanese government still owns roughly one-third of NTT'sshares, regulated by the NTT Law (Law Concerning Nippon Telegraph and Telephone Corporation, Etc.[d]).[8]
The company is incorporated pursuant to the NTT Law.[8] The purpose of the company defined by the law is to own all the shares issued byNTT East [ja] andNTT West [ja] and to ensure proper and stable provision of telecommunications services all over Japan including remote rural areas by these companies as well as to conduct research relating to the telecommunications technologies that will form the foundation for telecommunications. On 1 July 2019, NTT Corporation launchedNTT Ltd., an $11 billion de facto holding company business consisting of 28 brands from across NTT Security,NTT Communications andDimension Data.[9]
Since its privatization in 1985, the abbreviation "NTT" has become synonymous with the brand name. Following amendments to the NTT Law permitting a change in its official trade name, the company was renamed Nippon Telegraph and Telephone Corporation (日本電信電話株式会社) toNTT, Inc. (NTT株式会社), effective July 1, 2025.
Established as astate monopoly in August 1952 to take over the Japanese telecommunications system,Nippon Telegraph and Telephone Public Corporation (日本電信電話公社,Nippon Denshin Denwa Kōsha; shortened intoDen-Den Kōsha (電電公社)) wasprivatized in 1985 to encourage competition in the country's telecom market, making Japan the second country in the world (after the United States) to deregulate itstelecom market. In 1987, NTT made the largest stock offering to date, at US$36.8 billion.[10][11]
Because NTT owns most of Japan'slast mile infrastructure (including broadbandfibre connections), it hasoligopolistic control over most landlines in Japan. In order to stimulate local competition, the company was divided into a holding company (NTT) and three telecom companies (NTT East [ja],NTT West [ja], andNTT Communications) in 1999. The NTT Law regulating NTT East and West requires them to serve only short-distance communications and obligates them to maintain fixed-line telephone service all over the country. They are also obligated to lease their unused optical fiber (dark fiber) to other carriers at regulated rates. NTT Communications is not regulated by the NTT Law.
In July 2010, NTT andSouth African IT companyDimension Data Holdings announced an agreement of a cash offer from NTT for Dimension Data's entire issued share capital, in £2.12bn ($3.24bn) deal.[12]
In late 2010, NTT's Japan-to-US transpacific network reached 400 Gbit/s. In August 2011, its network capacity was expanded to 500 Gbit/s.[13]
In 2021, Nippon Telegraph & Tel issuedgreen bonds worth about 300 billionyen ($2.7 billion). The bonds include three tranches with maturities of 3, 5 and 10 years. The proceeds will be used for environmentally friendly projects (renewable energy, energy-efficient broadband infrastructure, etc.).[14]
NTT Group consists of the following major companies, divided into five segments. NTT East, NTT West, NTT Communications,NTT Docomo, andNTT Data are most major subsidiaries. NTT Data is listed on the stock markets. NTT Urban Development is a subsidiary involved inreal estate.[16] NTT Communications' business outside of Japan became part ofNTT Ltd. on 1 July 2019.[9]
In 2023, theWorld Intellectual Property Organization (WIPO)’s Annual PCT Review ranked Nippon Telegraph and Telephone's number of patent applications published under thePCT System as 10th in the world, with 1,760patent applications being published during 2023.[21]
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A spokesman for the subsidiary, NTT Urban Development, said the company knew the deal involved Kushner Cos. The subsidiary describes itself as the real estate arm of NTT.
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