St Columba's Catholic College, formerly St Columba's High School, is an independent Roman Catholic co-educational secondary day school, located in the Blue Mountains region, on the border of Winmalee and Springwood, in New South Wales, Australia.

The property is a listed site on the Blue Mountains City Council local government heritage register.

[2] The monastic influence is seen in the neogothic sandstone architecture and the grounds with scattered grottos and shrines overlooking the Blue Mountains World Heritage National Park of Australia NSW.

The St Columba's property is one of the largest landholdings in the Blue Mountains Local Government Area.

[citation needed] A feature of note is a radio telescope dish salvaged from the Paul Wild Observatory at Culgoora, west of Narrabri in 1997.