The Macaulay River is a river of the Mackenzie Country of New Zealand's South Island. It flows south from the Two Thumb Range, part of the Southern Alps, its valley merging with that of the Godley River shortly before it enters the northern end of Lake Tekapo.

• List of rivers of New Zealand

• "Place name detail: Macaulay River". New Zealand Gazetteer. New Zealand Geographic Board. Retrieved 12 July 2009.

43°44′S 170°33′E / 43.733°S 170.550°E / -43.733; 170.550