Loch Libo is a freshwater loch in East Renfrewshire, Parish of Neilston, Scotland. The Lugton Water has its source from the southern end of loch, running 14 miles before reaching its confluence with the River Garnock near Kilwinning. The village of Uplawmoor and the hamlet of Shillford lie nearby. 3 mi (4.8 km) away to the southwest is the town of Neilston.