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Dentsu Group Inc.
Native name
TypePublic (K.K)
TYO: 4324
Public relations
Information, Communication
FoundedJuly 1, 1901; 119 years ago (1901-07-01) (as Japan Advertising Ltd.)
Key people
Hiroshi Igarashi
RevenueIncrease ¥1.018 trillion (2018)[1]
Increase ¥61.4 billion (FY 2018)[1]
Number of employees
62,608 (2018)[2]
SubsidiariesDentsu Aegis Network

Dentsu Inc. (Japanese: 株式会社電通 Kabushiki-gaisha Dentsū or 電通 Dentsū for short) is a Japanese international advertising and public relations joint stock company headquartered in Tokyo. Dentsu is currently the largest advertising agency and the fifth largest advertising agency network in the world in terms of worldwide revenues.[3][4][verification needed]


Dentsu was originally established as Japan Advertising Ltd. (日本広告株式会社, Nihon Kōkoku Kabushiki-gaisha) and Telegraphic Service Co. (電報通信社, Denpō Tsūshin-sha) by Hoshiro Mitsunaga. In 1906, Telegraphic Service Co. became Japan Telegraphic Communication Co., Ltd. (株式会社日本電報通信社, Kabushiki-gaisha Nihon Denpō Tsūshin-sha). The next year, Japan Advertising Ltd. merged with Japan Telegraphic Communication Co., Ltd. to create advertising and communications operations. Japan Telegraphic Communication Co., Ltd. sold off its news division to Doumei News Agency in 1936 to change the company's focus to specialized advertising. In 1943, 16 companies were acquired in order to supplement Japan Telegraphic's advertising business. That same year, operational bases were established in Tokyo, Osaka, Nagoya, and Kyūshū. With the 1951 arrival of commercial radio broadcasting in Japan, the Radio Division was established at Japan Telegraphic's head and local offices.

In 1955, Japan Telegraphic Communication Co., Ltd. changed its name to Dentsu Inc.[5] 1995 saw Dentsu creating five domestic regional subsidiaries.[6]

In January 2020, Dentsu acquired Digital Pi, an agency focused on B2B.[citation needed]

Initial public offering[edit]

Dentsu was listed on the Tokyo Stock Exchange in 2001. During the initial public offering of Dentsu, in December 2001, a trader at UBS Warburg, the Swiss investment bank, sent an order to sell 610,000 shares in this company at ¥6 each, while he intended to sell 16 shares at ¥600,000. The bank lost £71 million.[7]

Dentsu's sales are more than double its nearest competitor, Hakuhodo or ADK, in the Japanese market, thanks to the company's origins as a media representative during the early part of the 20th century, producing the first newspaper advertisements as well as the first television commercials in Japan.[citation needed]

Geneon Entertainment[edit]

In July 2003, Dentsu acquired Pioneer LDC from Pioneer Corporation and renamed it to Geneon Entertainment, while its North American division, Pioneer Entertainment, was renamed to Geneon USA.[8]

On November 12, 2008, Dentsu announced that it was selling 80.1% of its ownership in Geneon to NBCUniversal's Universal Pictures International Entertainment (UPI), who planned to merge the company with its Universal Pictures Japan division to form a new company.[9][10] The merger closed on February 1, 2009.

Aegis Group[edit]

On 12 July 2012, Dentsu agreed to acquire British-based Aegis Group plc in a cash deal worth $4.9 billion. The deal was completed in March 2013.[11] Dentsu Aegis Network, managed all Aegis Media work and non-Japanese Dentsu operations worldwide.[12] On September 2020 Dentsu Group Inc. announced that its international business Dentsu Aegis Network will operate under the dentsu brand. This simplification has seen three lines of business established across media, CRM and creative. The business is registered as Dentsu International Limited with UK Companies House in October 2020.[13]

Corporate affairs[edit]

Project categorization[edit]

Dentsu Inc. categorises project markets in four different parts: National advertisement market; Advertisement-related market; New market; Foreign market (in addition to Dentsu Aegis Network, its overseas subsidiary, which operates in over 120 countries). National advertisement market consists of media projects. Advertisement related projects consist of marketing services. New market consists of sport events advertisement. Foreign market contains above mentioned three categories in the foreign market.

Dentsu Building[edit]

The Dentsu Building is a high-rise building in Shiodome, Minato, Tokyo, which houses Dentsu's corporate offices. With 48 floors that rise to 213.34 m (700 ft), it is the eleventh-tallest building in Tokyo. It was designed by Jean Nouvel, the French architect, and completed in 2002. It was built over the site of Tokyo's first railway station, and sits aside the Hamarikyu Gardens, formerly the site of a shōgun's vacation home.

Mount Fuji climbing tradition[edit]

Since 1925, Dentsu employees have had a company tradition of climbing Mount Fuji.[14] Every July all new staff and newly promoted executives climb Mt Fuji. Employees who are not physically able to do so are exempt. A former employee gave the reasoning behind this as: "The message is: 'We are going to conquer the one symbol that represents Japan more than anything else. And, once we do that, it will signify that we can do anything.'"[15]

Overworking controversy[edit]

In August 2015, Dentsu was caught exceeding its own 70-hour monthly maximum overtime limit.[16] In December Matsuri Takahashi, a University of Tokyo graduate and 24-year-old female employee of Dentsu, committed suicide.[17] The Japanese government recognized her suicide as karoshi.[16] In July 2017, the company was charged by Japanese authorities for the death of Takahashi. No individuals were charged, only the corporation.[18] The company admitted allowing illegal levels of overtime[19] and was convicted in October, paying ¥500,000 in fines.[20]

Mr. Tadashi Ishii, Representative Director and President & CEO, notified Dentsu on December 28, 2016 that he will resign as Representative Director and President & CEO.[17] His papers were sent to the prosecutors office because of the violation of the Labor Standards Act.[21] Over a half century of ongoing overworking was documented by The New York Times,[17] including training materials supporting a Dentsu president urging working "even if it kills you."

A 2017 attempt to encourage letting workers "leave the office at 3 p.m. on the last Friday of the month" did not get much participation.[22] Also in 2017, a former executive creative director of Dentsu Japan has resigned from his own company following allegations he sexually harassed a woman during his tenure at the advertising giant.[23]

Dentsu Group companies[edit]

Affiliates and shareholdings[edit]

Outside Japan[edit]

See also[edit]


  1. ^ a b "Dentsu Inc. FY2018 Consolidated Financial Results" (PDF).
  2. ^ "Corporate Data - WHO WE ARE - DENTSU INC".
  3. ^ Dougherty, Phillip H. (1984-04-23). "ADVERTISING; Dentsu of Japan Still Largest Agency". The New York Times. Archived from the original on 2019-05-31. Retrieved 2021-01-18.
  4. ^ Dougherty, Philip H (1981-05-22). "Y.&R. AND DENTSU START JOINT AD VENTURE IN JAPAN". The New York Times. Archived from the original on 2015-10-24. Retrieved 2021-01-18.
  5. ^ "Dentsu Company History (Japanese)". Dentsu. Retrieved 2019-05-29.
  6. ^ "Dentsu Company History (English)". Dentsu. Retrieved 2019-05-29.
  7. ^ "Fat fingered typing costs a trader's bosses £128m-News-World-Asia-TimesOnline". 16 February 2007. Archived from the original on 2007-02-16.
  8. ^ "Dentsu acquires Pioneer - News". Anime News Network. 2003-07-21. Retrieved 2013-11-05.
  9. ^ "ジェネオン エンタテインメント㈱一部株式のUPIEへの譲渡とジェネオン エンタテインメント㈱とUPIE子会社との合併について" (PDF). Dentsu. 2008-11-12. Retrieved 2019-05-29.
  10. ^ "Geneon to Merge with Universal Pictures Japan - News". Anime News Network. 2008-11-12. Retrieved 2013-11-05.
  11. ^ "Japan's Dentsu to Acquire Aegis Group for $4.9 billion". AdAge. 12 July 2012.
  12. ^ "Dentsu Closes $5 Billion Acquisition of Aegis Group". Ad Age. Retrieved 2015-11-03.
  13. ^ "dentsu". Retrieved 2020-10-13.
  14. ^ Clash, Jim. "Sacred Mountain" November 17, 2006 Forbes Retrieved September 7, 2015
  15. ^ O'Reilly, Lara "This company makes all its new employees climb Mount Fuji" May 5, 2015. Business Insider. Retrieved September 7, 2015.
  16. ^ a b Yamaguchi, Mari (2016-10-28). "Latest Dentsu death shows 'karoshi' a part of Japan Inc. that toothless laws can't fix". The Japan Times Online. ISSN 0447-5763. Archived from the original on 2016-11-01. Retrieved 2016-11-04.
  17. ^ a b c Jonathan Soble (December 28, 2016). "Chief of Dentsu, Japanese Ad Agency, to Resign Over Employee's Suicide". The New York Times.
  18. ^ "Japan's Dentsu advertising agency charged over employee suicide". BBC News. 8 Jul 2017. Retrieved 9 July 2017.
  19. ^ Kikuchi, Daisuke (22 September 2017). "At trial, Dentsu chief admits ad giant guilty of ignoring illegal levels of overtime". Japan Times. Retrieved 26 January 2021.
  20. ^ "Japan's Dentsu gets only small fine for overtime breaches despite outcry". Reuters. 5 October 2017. Archived from the original on 2021-01-26. Retrieved 25 January 2021.
  21. ^ "Dentsu Announces Change (Resignation) of Representative Director" (PDF).
  22. ^ Makiko Inoue; Megan Specia (October 5, 2017). "Young Worker Clocked 159 Hours of Overtime in a Month. Then She Died". The New York Times.
  23. ^ Dickinson, Eleanor (2017-12-21). "Japanese creative resigns after being accused of sexual harassment at Dentsu". Mumbrella Asia. Retrieved 2020-04-25.
  24. ^ started as Lord, Dentsu & Partners, renamed 1997.Shelly Freierman (January 6, 1997). "Lord, Dentsu Now the Lord Group". The New York Times.
  25. ^ "Dentsu of Japan Acquires 40% Stake in London's C.D.P." The New York Times. October 31, 1990.

Further reading[edit]

  • Kawashima, Nobuko. "Advertising agencies, media and consumer market: The changing quality of TV advertising in Japan." Media, Culture & Society 28#3 (2006): 393-410.
  • Moriarty, Sandra, et al. Advertising: Principles and practice (Pearson Australia, 2014), Australian perspectives
  • Sugiyama, Kotaro, and Tim Andree. The Dentsu Way: Secrets of Cross Switch Marketing from the World's Most Innovative Advertising Agency (2010)