Loon Bay is a local service district and designated place in the Canadian province of Newfoundland and Labrador.
Loon Bay is in Newfoundland within Subdivision G of Division No. 8.
As a designated place in the 2016 Census of Population conducted by Statistics Canada, Loon Bay recorded a population of 177 living in 82 of its 153 total private dwellings, a change of from its 2011 population of 144. With a land area of , it had a population density of in 2016.
Loon Bay is a local service district (LSD) that is governed by a committee responsible for the provision of certain services to the community. The chair of the LSD committee is Alana Penney.