Kłodnica (German: Klodnitz) is a river in the Upper Silesia region. It is about 75 km long and a right tributary of the Odra river.

Kłodnica River
An der Klodnitz in Gleiwitz.JPG
Kłodnica in downtown Gliwice
Physical characteristics
 • locationKatowice (southern district)
 • elevation305 meters (1,001 ft)
165 meters (541 ft) (at mouth)
 • location
Odra river at Kędzierzyn-Koźle
 • coordinates
50°19′47″N 18°09′44″E / 50.3297°N 18.1621°E / 50.3297; 18.1621Coordinates: 50°19′47″N 18°09′44″E / 50.3297°N 18.1621°E / 50.3297; 18.1621
Length75 km (47 mi)
Basin size1,125.8 km2 (434.7 sq mi)
Basin features
ProgressionOderBaltic Sea

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 This water transport facility has been replaced by the Gliwice Canal.