Artle Beck is a minor river of Lancashire. Rising at the confluence of Udale Beck and Foxdale Beck below Fosdale Bridge and Udale Bridge near Crossgill, Artle Beck flows northwest through steep-sided woodland, passing beneath Raven Scar on its way to Gresgarth Hall. From there, the beck continues north, skirting around the village of Caton before meeting the River Lune opposite Halton Park.