Gander Bay South is a local service district and designated place in the Canadian province of Newfoundland and Labrador. Gander Bay was a small place in the Fogo and Twillingate area in 1864. It was north of Gander. The way office opened in 1885 and the first waymaster was John Bursey. It became a post office on May 30, 1891, and the first postmaster was James Rowsell. It had no population after 1940. They moved to Gander Bay South.