Horseshoe Falls — formally known as the Horseshoe Weir — is a waterfall on the Rotten Calder Water within Calderglen Country Park, east of East Kilbride in South Lanarkshire, Scotland.

It sits in sequence among a series of scenic falls along the river's gorge, positioned between Crutherland Linn to the south and Torrance Linn to the north.

A footbridge spans the Rotten Calder just east of Torrance House at this point, offering a close view of the weir.

The surrounding gorge, celebrated historically for its romantic grandeur and ivy-clad crags, forms part of a Site of Special Scientific Interest recognised for its exceptional sequence of Scottish Carboniferous geology and fossil remains.