The Pearson River is a river of the West Coast region of New Zealand's South Island. It flows west from Pearson Saddle immediately to the south of Mount Taurus, before joining the Waiatoto River after a distance of roughly 4.5 kilometres (2.8 mi).

• List of rivers of New Zealand

"Place name detail: Pearson River". New Zealand Gazetteer. Land Information New Zealand. Retrieved 12 July 2009.