| Country | Romania |
|---|---|
| Counties | Covasna County |
| Cities | Sfântu Gheorghe |
| Length | 10 km (6.2 mi) |
| Mouth | Olt |
| Mouth location | Sfântu Gheorghe |
| Mouth coordinates | 45.8664°N 25.8032°E |
The Debren is a right tributary of the river Olt in Romania. It flows into the Olt in the city Sfântu Gheorghe. Its length is 10 km (6.2 mi) and its basin size is 18 km2 (6.9 sq mi).