Dairy Flat is a small, free bush campsite set on a forested flat beside the Big River in Upper Big River State Forest, Victoria, roughly 130 km northeast of Melbourne.

Accessible by 4WD only via a track off Big River Road, between Miners Flat and McClelland camping areas, it offers just two sites tucked beneath Peppermint gums and scattered Mountain Ash, with an understorey of tea-tree, wattle, and scrub.

The site is well shaded and surrounded by steep forested slopes. Wildlife is abundant, with wrens, treecreepers, kookaburras, and wallabies commonly spotted. Fishing is a popular activity along the heritage-classified Big River.

No facilities or toilets are provided, and there are no rubbish bins, so visitors must be fully self-sufficient, carrying in their own food, water, and firewood and packing out all waste. Dogs are permitted under conditions.