| Sirina | |
| Name Other: | Sirinia |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Caraș-Severin County |
| Length: | 22km (14miles) |
| Mouth: | Danube |
| Mouth Location: | Cozla |
| Mouth Coordinates: | 44.6205°N 22.0103°W |
| Basin Size: | 74km2 |
The Sirina is a small left tributary of the river Danube in Romania. It discharges into the Danube near Cozla. Its length is 22km (14miles) and its basin size is 74km2.