Odra is a river in central Croatia. Its source is in the Žumberak mountain, southwest of Zagreb. It flows south-east, more or less parallel to the river Sava. It flows into the river Kupa, just before the Kupa joins the river Sava near Sisak.

Coordinates: 45°41′N 16°10′E / 45.683°N 16.167°E / 45.683; 16.167

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