| Debren | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Covasna County |
| Subdivision Type3: | Cities |
| Subdivision Name3: | Sfântu Gheorghe |
| Length: | 10km (10miles) |
| Mouth: | Olt |
| Mouth Location: | Sfântu Gheorghe |
| Mouth Coordinates: | 45.8664°N 25.8032°W |
| Basin Size: | 18km2 |
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 10km (10miles) and its basin size is 18km2.