Gallery Koyanagi is a contemporary art gallery located in the Ginza area of Chuo-ku in the Tokyo prefecture of Japan. The gallery is run by Atsuko Koyanagi. She was born on the land upon which her gallery stands. Currently, the gallery is located in the eighth floor of the building, above retail shops.
Koyanagi has a high international profile thanks to its international roster of artists. Koyanagi is also the exclusive dealer for Japanese New York-based photographer Hiroshi Sugimoto. The gallery has also hosted art collaborations featuring Dior design Hedi Slimane.