Grey River
Grey River may refer to:
- Grey River (New Zealand), a major river in the west of New Zealand's South Island.
 - Grey River (Victoria), Australia
 - Grey River, Newfoundland and Labrador, Canada
 - Grey River (Chile)
 
See also
- Little Grey River, a tributary of the Grey River, in New Zealand
 - Gray River, Fiordland, New Zealand
 - Greys River, a tributary of the Snake River, in the United States