| Šerkšnys | |
| Mouth Coordinates: | 55.2588°N 23.9546°W |
| Subdivision Type1: | Country |
| Subdivision Type2: | Region |
| Length: | 13.7km (08.5miles) |
| Basin Size: | 34.6km2 |
| Tributaries Right: | Gentrinė |
The Šerkšnys, or Šerkšnė, is a river of Kėdainiai district municipality, Kaunas County, in central Lithuania. The long river has a basin area of 35km2. The Šerkšnys flows into the Nevėžis, a tributary of the Neman.[1]
The Šerkšnys begins near Nociūnai village and flows westwards in the Kėdainiai Industrial Zone surroundings. The Šerkšnys meets the Nevėžis from the left, next to Paobelys village.
The hydronym is derived from Lithuanian adjective šerkšnas ('hoar, hoary, greyish').