| Uogys | |
| Mouth Coordinates: | 56.2001°N 22.642°W |
| Subdivision Type1: | Country |
| Subdivision Type2: | Region |
| Length: | 30km (20miles) |
| Basin Size: | 85km2 |
| Tributaries Left: | Geištys |
Uogys is a river of Telšiai County and Šiauliai County, northern Lithuania. It flows for 30 kilometres and has a basin area of 85 km2.
It is a left-bank tributary of the Venta River.