| Liedas | |
| Mouth Coordinates: | 55.2518°N 23.8213°W |
| Subdivision Type1: | Country |
| Subdivision Type2: | Region |
| Basin Size: | 31.5km2 |
| Tributaries Left: | Sąsvila |
The Liedas (or Leda) is a river of Kėdainiai district municipality, Kaunas County, central Lithuania. It flows for 17.7 kilometres and has a basin area of 31.5 km².
It starts nearby Pelutava village and later flows through the Pernarava-Šaravai Forest. It meets the Šušvė from the right side near Juodkaimiai village.
The hydronym Liedas possibly derives from Lithuanian verbs liedyti, lieti ('to water').