thumb|19th-century view of Koishikawa ("東京小石川遠景").
thumb|Japanese artillery unit, at the [[Koishikawa Arsenal, Tokyo, in 1882. Photographed by Hugues Krafft.]]
is a district of Bunkyo, Tokyo. It consists of five sub-areas, . In Koishikawa are located two well regarded gardens: the Koishikawa Botanical Garden (operated by the University of Tokyo) in Hakusan, and the Koishikawa Korakuen Garden in Kōraku.
Train stations for accessing this locality include , , , and Myōgadani Station (茗荷谷駅, Myōgadani-eki).
The Koishikawa Arsenal was an important military installation during the Meiji era.
Education
Bunkyo operates the local public elementary and middle schools.
Zoned elementary schools are: Kanatomi (金富小学校), Kubomachi (窪町小学校), Rekisen (礫川小学校), and Yanagicho (柳町小学校).
Zoned junior high schools are: No. 1 (第一中学校), No. 3 (第三中学校), and Meidai (茗台中学校).
Koishikawa High School is operated by the Tokyo Metropolitan Government Board of Education. In addition the metropolis operates the Koishikawa Secondary Education School.
Gallery
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Image:Koishikawastreets.JPG|Residential street in Koishikawa
File:Teahouse at Koishikawa.jpg|Hokusai print
File:Sanmon gate of Denzu-in in Koishikawa, Tokyo.jpg|Sanmon of Denzū-in
File:Used bookstore with a billboard architecture in Koishikawa, Tokyo.jpg|A used bookstore, 大亜堂書店 (Taiadō Shoten) built in 1932
</gallery>