Barron River (Ontario)

Barron River
French: Rivière Barron
View of the Barron River looking downstream from the top of the Barron Canyon
Location of the mouth of the Barron River in southern Ontario
Location
CountryCanada
ProvinceOntario
District/County
Physical characteristics
SourceClemow Lake
  locationBarron Township, Unorg. South Nipissing, Nipissing District, Northeastern Ontario
  coordinates45°54′24″N 77°53′37″W / 45.90667°N 77.89361°W / 45.90667; -77.89361
  elevation225 m (738 ft)
MouthLac du Bois Dur, Petawawa River
  location
Laurentian Hills, Renfrew County, Eastern Ontario
  coordinates
45°52′48″N 77°23′40″W / 45.88000°N 77.39444°W / 45.88000; -77.39444
  elevation
139 m (456 ft)
Basin features
River systemSaint Lawrence River drainage basin
Tributaries 
  leftMulock Creek, Carcajou Creek

The Barron River (French: rivière Barron) is a river in the Saint Lawrence River drainage basin in Nipissing District and Renfrew County, Ontario, Canada. It flows from Clemow Lake in northern Algonquin Provincial Park and joins the Petawawa River, whose southern branch it forms, in the municipality of Laurentian Hills, near the municipality of Petawawa.

The river is named after Barron Township through which it flows, which in turn was named in honour of John Augustus Barron.

A popular canoe route passes through and a hiking trail leads to the edge of the Barron Canyon.