The Kiryū River is a river located in Gunma Prefecture, Japan. It flows through the city of Kiryū and is a tributary of the Tone River. The river is approximately 50 kilometers long and plays a significant role in the local ecosystem and agriculture. The Kiryū River is known for its scenic beauty, especially during the cherry blossom season. It provides recreational opportunities such as fishing and walking along its banks. The river also supports various wildlife, contributing to the biodiversity of the region.