Deer Flat is a small DOC conservation campsite situated along a bend in the Eglinton River within Fiordland National Park, about 62 kilometres north of Te Anau on Milford Road (SH94).

It is one of the tiniest campgrounds in the area, offering only a handful of tent sites set among beech forest and a grassy open meadow. The setting is peaceful, with birdsong and river views close at hand.

The campsite is accessed via a gravel road off the highway. Fires are permitted in designated fireplaces when no fire ban is in place.

Note that the site floods regularly, so it is best avoided after heavy rain, as access to some sites and facilities can be affected.