Isle Ristol, the innermost of the Summer Isles in Scotland, is a Scottish Wildlife Trust Reserve.

Lying roughly 12 miles (19 kilometres) north of Ullapool in Wester Ross, it is a tidal island, in Loch an Alltain Duibh, that is separated by a narrow channel from Old Dorney Bay.

Over fifty higher species have been identified amongst the flora on the Isle Ristol machair, amongst which are moonwort and adder's tongue.

[7] Isle Ristol was a site of a British Fishery Society station in the late 18th century.

This Highland location article is a stub.