
Akane Shinsha (AS) is a Japanese publishing company focused on adult material, such as comics books, and magazines. The company was established in October 1976.

Akita Publishing Co., Ltd. is a Japanese publishing company headquartered in Chiyoda, Tokyo. It was founded by Teio Akita on 10 August 1948. Its main editorial target has always been teenagers, and it currently publishes mostly manga. As of 2020, the company's president is Shigeru Higuchi.

Bungeishunjū Ltd. is a Japanese publishing company known for its leading monthly magazine Bungeishunjū. The company was founded by Kan Kikuchi in 1923. It grants the annual Akutagawa Prize, one of the most prestigious literary awards in Japan, as well as the annual Naoki Prize for popular novelists. It also granted the annual Bungeishunjū Manga Award for achievement in the manga and illustration fields. It is headquartered in Chiyoda, Tokyo.

Fujimi Shobo (富士見書房), formerly Fujimi Shobo Co., Ltd. , was a Japanese publisher that specialized in light novels, manga, role-playing games and collectible card games. Founded in 1972 and reorganized three times, it was at times an independent company and at times an imprint of Kadokawa Future Publishing. It ceased to be an independent company in 2013, and the brand was retired in 2015.

Hakubunkan is a Japanese publishing company founded in 1887 amidst the wealth and military prosperity of the Meiji era. Hakubunkan entered the publishing arena by printing a nationalist magazine as well as expanding into printing, advertising, paper manufacturing, and related businesses, becoming one of Japan's largest publishing companies in the process.

Hakusensha, Inc. is a Japanese publishing company. It is headquartered in Chiyoda, Tokyo.

Hayakawa Publishing, Inc. is a Japanese publishing company. It is the largest science fiction publisher in Japan; almost all winners of the Seiun Award for Best Foreign Novel are published by the company.

Houbunsha Co., Ltd is a Japanese publishing company founded on July 10, 1950. It is based in Bunkyo-ku, Tokyo.

Iwanami Shoten, Publishers is a Japanese publishing company in Tokyo.

Kadokawa Corporation , formerly Kadokawa Dwango Corporation,, is a Japanese media conglomerate that was created as a result of the merger of the original Kadokawa Corporation and Dwango Co., Ltd. on October 1, 2014.

Kadokawa Shoten (角川書店), formerly the Kadokawa Shoten Publishing Co., Ltd. , is a Japanese publisher and division of Kadokawa Future Publishing based in Tokyo, Japan. It became an internal division of Kadokawa Corporation on October 1, 2013. Kadokawa publishes manga, light novels, manga anthology magazines such as Monthly Asuka and Monthly Shōnen Ace, and entertainment magazines such as Newtype. Since its founding, Kadokawa has expanded into the multimedia sector, namely in video games and in live-action and animated films.

Kawade Shobō Shinsha., Ltd. , formerly Kawade Shobō (河出書房), is a publisher founded in 1886 in Japan and headquartered in Sendagaya, Shibuya, Tokyo. It publishes the magazine Bungei and administers the Bungei Prize.

Kodansha Ltd. is a Japanese privately-held publishing company headquartered in Bunkyō, Tokyo. Kodansha is the largest Japanese publishing company, and it produces the manga magazines Nakayoshi, Afternoon, Evening, Weekly Shōnen Magazine and Bessatsu Shōnen Magazine, as well as the more literary magazines Gunzō, Shūkan Gendai, and the Japanese dictionary Nihongo Daijiten. Kodansha was founded by Seiji Noma in 1909, and members of his family continue as its owners either directly or through the Noma Cultural Foundation.

Nihon Bungeisha , or Nichibun (にちぶん), is a book and magazine publisher established in 1959 and based in Chiyoda, Tokyo, Japan.

Recruit is a human resources company headquartered in Japan. It was founded as "Daigaku Shimbun Koukokusha" in 1960 as an advertisement company that specialized in university newspapers. It owns the job search engine Indeed and the employer review site Glassdoor.

Shinshokan is a Japanese publishing company. It was established on June 14, 1961. In April 2009, the US publisher Digital Manga Publishing announced a co-branding operation with Shinshokan, to license yaoi and shōjo manga from Shinshokan's Wings, Dear, and Dear+ anthologies under the DokiDoki imprint.

Shogakukan Inc. is a Japanese publisher of dictionaries, literature, comics (manga), non-fiction, DVDs, and other media in Japan.
Shueisha Inc. is a Japanese company headquartered in Chiyoda, Tokyo, Japan. The company was established in 1925 as the entertainment-related publishing division of Japanese publisher Shogakukan. The following year, Shueisha became a separate, independent company.

Square Enix Holdings Co., Ltd. is a Japanese entertainment conglomerate and video game company best known for its Final Fantasy, Dragon Quest and Kingdom Hearts role-playing video game franchises, among numerous others. Outside of video game publishing and development, it is also in the business of merchandise, arcade/amusement facilities and manga publication under its Gangan Comics brand.
Takarajimasha, Inc. is a Japanese publishing company based in Chiyoda, Tokyo. It is known for publishing subculture-oriented fashion magazines aimed at teens, fashion magazines in general, as well as guide books.

Takeshobo Co., Ltd. is a major publisher in Japan.
Tokuma Shoten Publishing Co., Ltd. is a publisher in Japan, headquartered in Shinagawa, Tokyo. The company was established in 1954 by Yasuyoshi Tokuma in Minato, Tokyo. The company’s product portfolio includes music publishing, video game publishing, movies, anime, magazines, manga and books.

Toyo Keizai Inc. is a book and magazine publisher specializing in politics, economics and business, based in Tokyo, Japan.

Wani Books Co., Ltd. is a Japanese publishing company focused on manga-related publication, including magazines and books. The company was established in November 1979. It publishes a manga magazine called Comic Gum.

Yuhikaku Publishing Co., Ltd. is a Japanese publishing company known as a specialist legal publisher. It has been run by the Egusa family since its foundation in 1877, headquartered in Kanda-Jinbōchō, Tokyo.