Tonj
| Tonj Kalkuel | |
|---|---|
| A Catholic church in Tonj | |
| Nickname: Gen-ngeu | |
| Coordinates: 07°16′48″N 28°40′48″E / 7.28000°N 28.68000°E | |
| Country | South Sudan | 
| Region | Bahr el Ghazal | 
| State | Warrap State | 
| County | Tonj South County | 
| Government | |
| • Type | Local Government | 
| Elevation | 1,404 ft (427 m) | 
| Population  (2010 Estimate) | |
|  • Total | 17,340 people | 
| Time zone | UTC+3 (EAT) | 
Tonj is a town located in Warrap State, in the Bahr el Ghazal region of South Sudan. It is known by various names, including Kalkuel, Genanyuon, Jurkatac, Madiera, Genngeu, and Tonjdit. The town is bordered by Rumbek, Cueibet, Yambio, Bentiu, and Gogrial. As of 2010, its population is 17,340.