Wabasca 166C is an Indian reserve of the Bigstone Cree Nation in Alberta, located within the Municipal District of Opportunity No. 17. In the 2016 Canadian Census, it recorded a population of 188 people living in 47 of its 58 total private dwellings. The community is located along the northeast shore of North Wabasca Lake.

56°09′08″N 113°50′03″W/56.1523°N 113.8341°W/ 56.1523; -113.8341(Wabasca 166C)