Japanese companies established in 1911

is a Japanese privately held publishing and music company headquartered in Bunkyō, Tokyo. Kodansha publishes manga magazines which include Nakayoshi, Morning, Afternoon, Evening, Weekly Young Magazine, 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.

, is a marine products company based in Tokyo, Japan. Formerly known as from 31 March 1937 to 30 November 2022, it officially changed its name to its common abbreviation on 1 December 2022.

Japanese pen manufacturer