Grainger Falls is a waterfall in Fiordland, New Zealand.

Grainger Falls was first recorded by Andreas Reischek, an Austrian who explored New Zealand in the 1880s.

[3] As the stream which drains Lake Hector and contains the waterfall was unnamed, the NZ Geographic Naming Board called it Grainger Stream.

Grainger Falls and Stream are now recorded in the New Zealand Gazetteer of Official Geographic Names.

[4] They are shown on the West Cape (CF04) map which is part of the NZ Topo50 series.