Waiau could refer to several places in New Zealand:
- Waiau, Canterbury
- Waiau, Taranaki
- Waiau, Waikato, on the Coromandel Peninsula
- Waiau, Auckland, south of Auckland
- Waiau Bay
- Waiau Branch, a Canterbury branch line railway in service from 1882 to 1978: see also Weka Pass Railway
- Waiau River, Hawke's Bay
- Waiau River, Canterbury
- Waiau River, Southland
|This disambiguation page lists articles about distinct geographical locations with the same name.
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