Coordinates: 54°26′27″N 0°58′25″W / 54.440857°N 0.973748°W / 54.440857; -0.973748
Westerdale is a village, civil parish and dale within the Scarborough district of North Yorkshire, England. The Esk Valley Walk runs through part of the village.
According to the 2011 UK census, Westerdale parish had a population of 149, a decrease on the 2001 UK census figure of 175.
Westerdale village is a single street of around 25 houses, to the north east of a small stream which joins the Esk near Hunters Sty bridge. There is a church - Christ Church, and a small, disused Wesleyan chapel. Close to the church can be found the Village Hall (formerly a small schoolhouse), a postbox and a telephone box.
Westerdale Side is part of Westerdale, but is best approached from near the neighbouring village of Castleton. It is accessed by a narrow road running along the southwest of Castleton Rig.
Westerdale Moor is an extensive upland area surrounding the farmland in Westerdale. At its highest, Westerdale Moor rises to 429 metres in the vicinity of Ralphs Cross, and Baysdale Moor to the south-west reaches 433 metres at Stony Ridge - the second highest point of the North York Moors.