Koishikawa may refer to:
Places
edit- Koishikawa, locality within Bunkyo, Tokyo.
People
edit- Masahiro Koishikawa, noted Japanese astronomer.
Astronomy
edit- 6097 Koishikawa, Asteroid named after the astronomer
Fictional characters
edit- Miki Koishikawa, Marmalade Boy character.
- Jin Koishikawa, Marmalade Boy character.
- Chiyako Koishikawa, Marmalade Boy character.