Grandmother's Bay 219 () is an Indian reserve of the Lac La Ronge Indian Band in Saskatchewan. Located on Otter Lake, part of the Churchill River system, it is about north-east of Lac la Ronge. In the 2016 Canadian Census, it recorded a population of 342 living in 101 of its 115 total private dwellings. In the same year, its Community Well-Being index was calculated at 44 of 100, compared to 58.4 for the average First Nations community and 77.5 for the average non-Indigenous community.