Ratnyčia is a river in southern Lithuania.
| Ratnyčia | |
|---|---|
 river near Kermušija village | |
 | |
| Location | |
| Country | Lithuania |
| Physical characteristics | |
| Mouth | Neman |
• coordinates | 54°1′N 23°58′E / 54.017°N 23.967°E |
| Length | 33 km (21 mi) |
| Basin size | 172 km2 (66 sq mi) |
| Discharge | |
| • average | 1.31 m3/s (46 cu ft/s) |
It begins near the state border of Lithuania and Belarus, in the Dainava Forest, in a swamp.[1]