Tōyō Bunko, Research library in Hon-Komagome, Japan

Tōyō Bunko is a specialized library in Hon-Komagome that holds extensive collections of books, maps, and manuscripts about Asian studies in multiple languages. The reading spaces contain materials across different academic subjects, allowing visitors to consult historical sources and research documents.

The institution was founded in 1924 by Iwasaki Hisaya to create a strong foundation for Oriental studies research. Through systematic collection of Asian documents, it grew into an important center for understanding the region's history and cultures.

The name Tōyō Bunko means "Oriental Library"; the English name appears in gold lettering on the dark signboard above the entrance. Near the entrance, cookies and curry from the Mitsubishi-affiliated Koiwai Farm are sold. The library publishes the quarterly journal Tōyō Gakuhō and, since 1926, the English-language Memoirs of the Research Department of the Toyo Bunko.

Library access is open to university undergraduates and above; bring identification for continued use, and researchers may also present a letter of introduction. Materials are consulted on site only, with no lending, and copying is restricted and relatively costly because preservation comes first. The museum in the 2011 annex closed in late 2024 for renovation and reopened on 21 January 2026.

The library holds five National Treasures, including a Tang-era fragment of the Old Text Shangshu and a Heian-period manuscript of the Shiji known as the Takamatsunomiya text. Near the entrance, cookies and curry from the Mitsubishi-affiliated Koiwai Farm are sold.