|Main source||Olivine Range|
|River mouth||Cascade River|
|Length||20 kilometres (12 mi)|
The Martyr River is a river of the West Coast Region of New Zealand's South Island. It flows generally northwest from its sources in the Olivine Range, joining its stream with the braided paths of the Cascade River 10 kilometres from the coast.
"Place Name Detail: Martyr River". New Zealand Geographic Placenames Database. Land Information New Zealand. Retrieved 12 July 2009.
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