Radiant is an unincorporated place and former railway point in geographic Deacon Township in the Unorganized South Part of Nipissing District in northeastern Ontario, Canada.

[1] Radiant is located within Algonquin Provincial Park on Radiant Lake on the Petawawa River.

It lies on the now abandoned Canadian National Railway Beachburg Subdivision, a section of track that was originally constructed as the Canadian Northern Railway main line, between Odenback to the west and Lake Traverse to the east; it had a passing track.

Other map sources:

This Northern Ontario geographical article is a stub.