is a small freshwater loch
in the Stirling council area
in Scottish Highlands
. It lies in the former county of Perthshire
The loch lies to the east of the Mentieth Hills, about 6 km northeast of the Port of Menteith
. The Torrie Forest extends over Lennieston Muir to the east.
The name Rusky derives from the Gaelic Loch an Rusgaidh
, meaning "Lake of the Peeling"