Rois-bheinn is the joint highest hill in the Scottish region of Moidart, a title it shares with its neighbour Beinn Odhar Bheag, whose summit has the same elevation.
The mountain may be climbed by its west ridge from the small village of Roshven (a settlement that takes its name from a roughly phonetic spelling of Rois-bheinn's name), or from Inverailort to the north.