Iwanami Shoten

Iwanami Shoten, Publishers (株式会社岩波書店, Kabushiki Gaisha Iwanami Shoten) is a Japanese publishing company based in Tokyo.

Iwanami Shoten was founded in 1913 by Iwanami Shigeo. Its first major publication was Natsume Sōseki's novel Kokoro, which appeared as a book in 1914 after being serialized in the Asahi Shimbun. Iwanami has since become known for scholarly publications, editions of classical Japanese literature, dictionaries, and high-quality paperbacks. Since 1955, it has published the Kōjien, a single-volume dictionary of Japanese that is widely considered to be authoritative.

Iwanami's head office is at Hitotsubashi 2–5–5, Chiyoda, Tokyo.