- Cariboo Hudson Mine about 18 miles by road SE of Barkerville.1
- Caribou Hills, East Channel MacKenzie River, 3 miles northwest of Reindeer Station.1
- Caribou Island, Lake Superior, on the Long Slough.3
- Carillon Provincial Park, east of Hawkesbury on south shore of Ottawa River just before Quebec border.1
- Carleton3
- Carleton Place.2
- Carling Twp, Killbear Prov Park, Kilcoursie Swamp.1
- Carling Twp, Killbear Prov Park, Killcoursie Swamp, Grid 612219 (41 H/8).1
- Carnarvon Twp., Mud Like, 1.5 km S. of Mindemoya, Manitoulin Isl.1
- Cavan Tp, conc III, lot 6, 2.5 mi SW of Millbrook.1
- Centennial Park on L. bank of Current River Thunder Bay City.1
- Chamby, comté de Chambly.1
- Champlain Lookout, mountain east of Heyworth (on Hwy 148) in Gatineau Park.1
- Chandos Twp., J.B. Falls property, ca. 10.5km WNW of Coe Hill P.O., 4km NNW of Glen Alda1
- Charlevoix2
- Charlevoix-Est2
- Charlotte5
- Charlottetown.4
- Chatham-Kent4
- Chelsea Island.1