Kodansha Ltd. (株式会社講談社 Kabushiki-gaisha Kōdansha) is a Japanese publishing company headquartered in Bunkyō, Tokyo, Japan. Kodansha is the largest Japanese publishing company, and it produces the manga magazines Nakayoshi, Afternoon, Evening, and Weekly Shōnen Magazine, as well as more literary magazines such as 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.