The Japan News Network (JNN; Japanese: ジャパン・ニュース・ネットワーク, romanized: Japan Nyūsu Nettowāku) is a Japanese commercial television network run by TBS Television, owned by TBS Holdings (which is a part of the major conglomerate Mitsui Group).

[4]: 18–19  The opening of commercial television outside the metropolitan area meant that the importance of interconnection was increasing.

[4]: 24 The lack of nationwide coverage for commercial broadcasting in Japan makes it even more crucial for local operators to work together while gathering news.

[4]: 25 The broadcast of the wedding of Crown Prince Akihito (later the 125th Emperor, now Emperor Emeritus) and Crown Princess Michiko (now Empress Emerita) on 1 April 1959, played an important role in bringing about the final signing of the news agreement.

[4]: 2  As stipulated in the network agreement: In the early days, each station was free to replace the title of the news program, but on 31 March 1975, after the affiliation change in Kansai from Asahi Broadcasting TV to Mainichi Broadcasting, all network member stations' news branding was unified on the JNN system, with TBS-produced newscasts airing on the regional stations while regional broadcasters provided local content and reporters and news crews for the national programs.

Stations are listed mostly in Japanese order of prefectures which is mirrored in ISO 3166-2:JP, with exceptions for the Kantō region, Aichi-Gifu-Mie, Kansai region (except Mie), Tottori-Shimane and Okayama-Kagawa, which form single wide broadcasting markets respectively.