|River mouth||Opouri River|
|Length||10 km (6 mi)|
The Tunakino River is a river of the Marlborough Region of New Zealand's South Island. It flows south from its origins in a coastal rim of hills at the base of the Marlborough Sounds to reach the Opouri River 5 kilometres (3 mi) east of Rai Valley
"Place Name Detail: Tunakino River". New Zealand Geographic Placenames Database. Land Information New Zealand. Retrieved 12 July 2009.
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