Calder River or River Calder may refer to:
Australia
edit- Calder River (Tasmania) in north-west Tasmania
- Calder River (Victoria)
- Calder River (Western Australia) in the Kimberley region
United Kingdom
editEngland
edit- River Calder, West Yorkshire, a major tributary of the River Aire
- River Calder, Cumbria, flows into the Irish Sea near Sellafield
- River Calder, Lancashire, a major tributary of the River Ribble
- River Calder, Wyre, Lancashire, a tributary of the River Wyre
Scotland
edit- River Calder, Highland, a tributary of the River Spey
- River Calder, Renfrewshire, near Lochwinnoch
- Tributaries of the River Clyde:
- Rotten Calder, near East Kilbride
- North Calder Water, from the Black Loch to Daldowie
- South Calder Water, near Wishaw
- Calder Water, near Strathaven, a tributary of the Avon Water