Clywedog

Clywedog may refer to:


 * Afon Clywedog, a tributary of the River Severn at Llanidloes
 * River Clywedog, a tributary of River Dee near Wrexham
 * A tributary of the Afon Wnion in Gwynedd
 * Clywedog Reservoir, a reservoir in Powys
 * River Clywedog, Denbigh, a tributary of the River Clwyd
 * Clywedog Brook, Powys, a tributary of the Wye.