The West Lyn is a river in England which rises high in Exmoor, Somerset, and joins the East Lyn at Lynmouth in Devon.

West Lyn River
Glen Lyn Gorge
Location
Country	England
County	Somerset
Physical characteristics
Source
• location	The Chains, Somerset, England
• coordinates	51°10′36″N 3°38′40″W / 51.17667°N 3.64444°W / 51.17667; -3.64444
• elevation	400 m (1,300 ft)
Mouth	Lynmouth
• location	Devon, England
• coordinates	51°13′46″N 3°49′44″W / 51.22944°N 3.82889°W / 51.22944; -3.82889
• elevation	0 m (0 ft)
Basin features
Tributaries
• left	River West Lyn

The upper reaches have been designated as a Site of Special Scientific Interest, because of the geomorphological landforms created in the 1952 flood.^[1]

The lower reaches of the river towards Lynmouth, known as the Glen Lyn Gorge, is a tourist attraction including a museum about the local water cycle, the floods of 1952, and a small hydroelectric plant.

Water is piped from the river to generate hydroelectric power for the Lynton and Lynmouth Cliff Railway, which is a water-balance funicular railway.