Tone River 利根川
Location
Country	Japan
Physical characteristics
Source	Mount Ōminakami
- location	Minakami, Gunma
- coordinates	37°03′16″N 139°06′05″E / 37.05444°N 139.10139°E / 37.05444; 139.10139
- elevation	1,831 m (6,007 ft)
Mouth	Pacific Ocean
- location	Chōshi, Chiba
- coordinates	35°44′45″N 140°51′07″E / 35.74583°N 140.85194°E / 35.74583; 140.85194
- elevation	0 m (0 ft)
Length	322 km (200 mi)
Basin size	16,840 km2 (6,500 sq mi)
Discharge
- average	256 m3/s (9,000 cu ft/s)

The Tone River (Japanese: 利根川) is a large river that runs through the Kanto region of Japan from northwest to southeast. It is the second longest river in Japan after the Shinano River. The river basin area is the largest in Japan.

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