| Svalia | |
| Source1 Location: | Klimbalė Marsh |
| Mouth Coordinates: | 56.0617°N 24.3969°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Lithuania |
| Length: | 36km (22miles) |
| Discharge1 Avg: | 0.4m3/s |
| Basin Size: | 72km2 |
The Svalia is a 36-km long river in northern Lithuania and a right tributary of the Lėvuo river.[1]
The town of Pasvalys is located near the mouth of the Svalia and is named after it. Pasvalys in Lithuanian language means "[town] near Svalia".