| Shakujii River | |
|---|---|
 Shakujii River and cherry blossoms | |
 | |
| Location | |
| Country | Japan |
| Physical characteristics | |
| Source | |
| • location | Kodaira, Tokyo |
| Mouth | |
• location | Sumida River, Kita-ku, Tokyo |
| Length | 25.2 km (15.7 mi) |
The Shakujii River (石神井川, Shakujii-gawa) is a river which flows through the northwest quadrant of central Tokyo, Japan. It is one of the tributaries of the Arakawa River. With a total length of 25.2 kilometres (15.7 mi) and a drainage basin of 61.6 square kilometres (23.8 sq mi), it is categorized as a Class A river by the Japanese government.
It springs up in Koganei Park in the district of Hana-koganei-minami-chō, in the city of Kodaira. It then flows in an easterly direction through the city of Nishitōkyō. Next, it continues through the special wards of Tokyo of Nerima-ku, Itabashi-ku and Kita-ku. At Horifune, Kita-ku, it empties into the Sumida River.