The Fox River is a river in Thunder Bay District in Northwestern Ontario, Canada.

[1] It is in the Great Lakes Basin and is a right tributary of the Pukaskwa River, which it enters within Pukaskwa National Park.

The river begins at an unnamed lake and flows southwest into Partridge Lake[2] and then onward into Fox Lake.

It continues southwest, enters Pukaskwa National Park, and reaches its mouth at the Pukaskwa River, which flows to Lake Superior.

This article related to a river in Northern Ontario, Canada is a stub.