Redwater is an unincorporated place and railway point in the municipality of Temagami, Nipissing District, Northeastern Ontario, Canada. It is in geographic Askin Township and is located on the shores of Lower and Upper Redwater lakes along the Ontario Northland Railway. Redwater was the site of a settlement established in the early 1900s that survived into the 1950s.

Temagami, formerly spelled Timagami, is a municipality in northeastern Ontario, Canada, in the Nipissing District with Lake Temagami at its heart.