| Kłodnica River | |
| Source1 Location: | Katowice (southern district) |
| Mouth Location: | Odra river at Kędzierzyn-Koźle |
| Mouth Coordinates: | 50.3297°N 18.1621°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Poland |
| Length: | 75km (47miles) |
| Source1 Elevation: | 305m (1,001feet) 165m (541feet) (at mouth) |
| Basin Size: | 1125.8km2 |
The Kłodnica is a river in the Upper Silesia region. It is about 75 km long and a right tributary of the Odra river.
Along Kłodnica's shore are Polish cities of Katowice, Kędzierzyn-Koźle, Ruda Śląska, Gliwice, and Zabrze.
There was also a Kłodnica Canal that opened in 1806. This water transport facility has been replaced by the Gliwice Canal.