| Location Map: | Scotland Sutherland |
| Official Name: | Isle Ristol |
| Coordinates: | 58.044°N -5.437°W |
| Gridreference: | NB971112 |
| Celtic Name: | Eilean Ruisteil |
| Meaning Of Name: | 'island with the horse valley' from Gaelic and Norse. |
| Area: | 225frac=8NaNfrac=8[1] |
| Area Rank: | 103 |
| Highest Elevation: | 710NaN0 |
| Population: | 0 |
| Local Authority: | Highland |
| References: | [2] [3] |
Isle Ristol, the innermost of the Summer Isles in Scotland, is a Scottish Wildlife Trust Reserve.
Lying roughly 12miles 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. Access is by boat from Old Dornie.
Over fifty higher species have been identified amongst the flora on the Isle Ristol machair, amongst which are moonwort and adder's tongue.[4]
Isle Ristol was a site of a British Fishery Society station in the late 18th century.[2]