Calderglen Country Park is a country park in the town of East Kilbride, South Lanarkshire, Scotland. It is situated along the eastern edge of the town and is its principal area designated for recreation and leisure in a countryside setting. It falls within a longstanding area of greenbelt, which distinguishes it from intra-urban greenspace.
The park was designated in 1978 and was officially opened in 1982. It features a small zoo, children's play facilities, display, function and exhibition venues, a large and scenic wooded river gorge with several large waterfalls, the Courtyard Café, a tropical hothouse, and several sports clubs within its curtilage, including Torrance Golf Club and East Kilbride Sports Club.
The visitor centre and adjoining facilities centre upon Torrance House, which dates to the 17th, 18th and late 19th centuries and is a Category A listed building. Modern built facilities occupy parts of its adjoining landscaped policies.
The central area of the park is approached from the old entrance lodge house at Strathaven Road via the tree-lined driveway which leads through the old policies towards Torrance House. The wider park asset comprises the wooded gorge portions of the once extensive Calderwood, Mauchlinhole and Torrance Estates, with Calderwood Glen occupying the northernmost stretch of the Rotten Calder Water, and Torrance Glen the southernmost part. Several miles of official nature trails run through the park (some prone to landslips), with the longest combined route running along the western banks from Old Flatt Bridge in the south to the Hamilton to East Kilbride Expressway (A725) in the north. The gorge side within the northern part of the park is a site of special scientific interest for its comprehensive sequence through Scottish Carboniferous geology, including abundant fossil remains. The Rotten Calder Water features a number of scenic waterfalls along its course, namely, from south to north: Flatt Linn, Crutherland Linn, the Horseshoe Weir (colq. Horseshoe Falls), Torrance Linn, Trough Linn, Black Linn, the Old Horseshoe Linn, the Small Linn, and finally the largest of the falls, Calderwood Linn (colq. Castle Falls). The designated woodland coverage within the park totals .
Calderglen is situated near to the industrial zone of Kelvin, the established residential neighbourhoods of St. Leonards and Calderwood, East Kilbride, and a small 21st century suburban development collectively referred to as Crutherland. It also adjoins the country hotel and farm estates of Crutherland to the south.