Mainichi Shimbun
| Front page of Mainichi Shimbun from September 8, 2013 | |
| Type | Daily newspaper | 
|---|---|
| Format | Blanket (54.6 cm x 40.65 cm) | 
| Owner(s) | The Mainichi Newspapers Co., Ltd. | 
| Publisher | Masato Kitamura | 
| Founded | February 21, 1872 (as the Tokyo Nichi Nichi Shimbun) | 
| Political alignment | Centre to centre-left Liberalism (Japanese) | 
| Language | Japanese | 
| Headquarters | Chiyoda, Tokyo Osaka Nagoya Kitakyushu | 
| Circulation | Morning edition: 1,349,000 (2024) Evening edition: 430,000 (2024) | 
| Website | www | 
The Mainichi Shimbun (毎日新聞, Mainichi Shinbun; Japanese pronunciation: [mai.ɲi.tɕi̥ ɕiꜜm.bɯɴ], lit. 'Daily Newspaper') is one of the major newspapers in Japan, published by The Mainichi Newspapers Co.
In addition to the Mainichi Shimbun, which is printed twice a day in several local editions, Mainichi also operates an English-language news website called The Mainichi (毎日; [mai.ɲi.tɕi], previously Mainichi Daily News, abbreviated MDN), and publishes a bilingual news magazine, Mainichi Weekly. It also publishes paperbacks, books and other magazines, including a weekly news magazine, Sunday Mainichi.
It is one of the four national newspapers in Japan; the other three are The Asahi Shimbun, the Yomiuri Shimbun and the Nihon Keizai Shimbun. The Sankei Shimbun and the Chunichi Shimbun are not currently in the position of a national newspaper despite a large circulation for both.